Topics are created by users and continually revised and updated so that similar topics are unified to avoid the kind of answer bloat that befell Yahoo Answers and Answers.com.

FORBES: Obsessed With Quora

Facebook is testing whether to follow Twitter's lead and allow users to click on a hashtag to pull up all posts about similar topics or events so it can quickly index conversations around trending topics and build those conversations up, giving users more reason to stay logged in and see more ads.

WSJ: Facebook Working on Incorporating the Hashtag

Thin-lipped Tarrin is the very model of decorum, not a crease out of place and game for verbal jousting about corporate sector debt resolution and similar scintillating topics.

CNN: THE FEUDING MINISTERS

So they looked at how to create a similar program tailored to issues and topics that were important to women.

FORBES: Move up http://i.forbesimg.com t Move down