Facebook has started promoting security tips at the top of each user's home page, with a link to information about scams, passwords and how to stay safe on the social network.
WordPress 3.4 offers new tools making it easier to choose themes and format photo captions.
Facebook, Google, Twitter, and AOL have joined an alliance that has been set up to counter "bad ads," including those that deliver malware, direct users to scams, or try to sell counterfeit goods, said StopBadware, the promoters of the alliance.
Twitter is updating its "expanded tweets" feature, giving users more previews, images and videos from a growing list of news outlets.
Skout, which offers a social networking app for iPhone and Android devices, has suspended temporarily access to its teen community, after three cases of alleged rape involving adults posing as teenagers on the network were reported.
Facebook took its App Center live on Thursday at a slick media event in San Francisco, announcing a handful of previously undisclosed features.
In an update that raises more questions than it answers, LinkedIn assured members that the company is working hard to protect their personal data in the wake of a security breach that exposed about 6.5 million hashed LinkedIn passwords.
Foursquare has launched a major redesign of its app for the iPhone and Android devices, incorporating features from social discovery and local search.