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Macworld's Twitter Twitter.com Coverage

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  Twitter reveals new design, revamped iPhone app The social networking service on Thursday released Twitter 4.0 for iPhone and announced a new, unified design.
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  Better living through Twitter After scoring a White House invite to participate in this week's Twitter Town Hall, Lex Friedman reflects on the many opportunities that the micro-blogging service offers users.
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  Twitter co-founder Biz Stone steps away from day-to-day duties Twitter co-founder Biz Stone is stepping away from his day-to-day duties at Twitter.
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  Weeding unworthy Twitter followers: Five do's and don'ts It's your life and Twitter stream. Christopher Breen thinks you should mold it any way you like.
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  Getting more Twitter followers: Five do's and don'ts Here are tips from author Don Zarrella on what people look for in a Twitter profile before following someone and how you can increase the chances they follow you back.
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  Twitter: 1 billion 'tweets' are sent every week To celebrate its fifth birthday this month, Twitter has released a fresh set of stats about its growth and usage.
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  FTC officially closes Twitter security investigation The U.S. Federal Trade Commission has closed the book on its legal action against Twitter, stemming from two 2009 hacking incidents where high-profile Twitter lost control of their accounts.
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  Twitter's promoted tweets to poison user timelines PCWorld's Brennon Slattery thinks that promoted tweets on Twitter will make the microblogging service a lot less enjoyable for users.
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  Twitter aiming high -- 1 billion users Twitter co-founder Evan Williams this week predicted that the company will reach the 1 billion user mark at some as-yet undetermined point.
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  Twitter Tips: Four ways to revisit your Twitter 'firsts' Trying to recall your first tweet or who your initial followers were on the Twitter microblogging service? Here are four free sites for Twitter nostalgics and sleuths.
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  Twitter revamps search engine Twitter has overhauled the back-end infrastructure of its search engine, boosting its speed, capacity, stability and scale.
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  Evan Williams steps down as Twitter CEO, will focus on tech Twitter's CEO, Evan Williams, is handing over the reins to Chief Operating Officer Dick Costolo.
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  Six Facebook, Twitter mistakes that can get you fired What are some of the red flag behaviors an employer might look for in their employees' online profiles? CSO's Joan Goodchild lists six mistakes users make on sites like Facebook and Twitter that could lead to unemployment.
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  Twitter contains second worm in a week Twitter was hit with a second worm over the weekend but again quickly fixed the vulnerability.
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  Twitter fixes cross-site scripting flaw A seriously security flaw was apparently found on Twitter on Tuesday but quickly fixed.
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  Revamped Twitter.com site takes flight In an effort to refresh the Twitter.com site, pull users back in from third-party platforms -- and take a swipe at Facebook -- Twitter has launched a significant site redesign.
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  Twitter launches the Tweet Button Twitter is launching its Tweet Button to simplify how people share links on Twitter from external Web sites.
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  Japan user marks Twitter's 20 billionth 'tweet' Twitter passed another milestone on Saturday with the sending of tweet number 20 billion.
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  Twitter encounters more digital certificate problems Twitter is having trouble with a digital certificate that secures communications to its Web site, which has been causing trouble for third-party applications.
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  Twitter battles fail whale with new data center Twitter is moving its technical operations infrastructure into a new, custom-built data center in the Salt Lake City area to better handle the microblogging service's needs.
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  Twitter to promote marketers' special offers Twitter has launched another advertising service, this time to promote special offers on behalf of marketers.
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  Twitter again apologizes for outages, bugs Twitter apologized on Tuesday for the second time in less than a week for the persistent technical problems affecting its service and platform.s
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  Twitter adds location to messages Twitter has announced the addition of Places on twitter.com and mobile.twitter.com, letting users tag their messages with their location.
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  Twitter's service disruptions and outages persist Twitter's outages enter a second week as the company scrambles to get the bugs under control.
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  Pesky networking bug stings Twitter A networking equipment problem caused downtime for Twitter on Wednesday.
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  Twitter tests URL shortening feature Twitter is testing a URL shortener feature.
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  Twitter gives the lowdown on its new business model Twitter's COO described a two-pronged plan on Wednesday for how the company plans to make money.
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  Biz Stone: Twitter has 105 million users Twitter's co-founders kicked off the first-ever developer conference with word that the service has 105 million users.
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  Top Twitter etiquette tips Does anything go on Twitter? Not quite. Here are some principles to help keep things polite.
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  Twitter app makers start pushing notifications iPhone 3.0 brought us push notifications, and Twitter applications have already started adding them, albeit in a variety of ways.
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  Automating Twitter OS X's Automator can make posting updates to Twitter supremely simple. Benjamin Waldie explains how.
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  Nine Twitter tips for business Here's how to strike the right balance when using this popular service to promote your business. (Hint: don't use it to spam everyone you know.)
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  Twitter for the creative Mac user James Dempsey used to wonder what the fuss about Twitter was all about. Then he tried out the micro-blogging service and found another tool that fit nicely into his routine as a creative professional.
• The social graces of social networking Here are some of the most common questions I’ve come up against with Facebook and the professionally-oriented Linkedin.