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Facebook on Monday made it possible for users to perform keyword searches for individual posts on the social network.

"With a quick search, you can get back to a fun video from your graduation, a news article you've been meaning to read, or photos from your friend's wedding last summer," said Tom Stocky, Facebook's vice president of search.

Users still have the option of using search phrases like "my friends who live in New York," he pointed out. Search results remain personalized and unique -- users can see only things that have been shared with them. The updates are due to roll out this week in U.S. English. They'll be available via the Facebook website and its iPhone app.

"It has taken a long time," Internet marketing expert Brian Carter told TechNewsWorld.

The changes are necessary: "Have you ever missed a post and gone back and the newsfeed is so personalized that it doesn't even show it anymore? Or you clicked on a link and loved it but lost the link?" he asked.

"So much of Facebook is about discovering and sharing great content," Carter said. "This will make finding that content again much easier, not to mention looking back at previous conversations."

It's not yet clear whether the search functionality will apply only to post content or to comments as well, but either way, it's "a much-needed tool," Carter said. "It's even more important for mobile, because the mobile experience is a bit slower and more limited."

'A Usability Problem'

The move is "long overdue," said Jim Tobin, president of Ignite Social Media.

"Graph Search never really reached its potential, and I can recall many times when I wanted to show someone a post I'd seen earlier and couldn't easily find it," he told TechNewsWorld. "When you have billions of pieces of content, not being able to find them is a usability problem."