It’s true. One third of all Facebook users are spending less time on the social networking site than they were a short six months ago.

A new study, conducted by Reuters and research firm Ipsos, found that 35% of American Facebook users are less engaged than they’ve ever been, and find Facebook often boring, not relevant, and not useful. Just 20% of users are increasing their usage. That leaves 45% in a stagnant place where they are more likely to join the 35% in months and years to come. Not good news for Facebook.

The same poll found that four out of five Faceook users have never once been influenced by ads that run on the site. That’s not only a bummer for marketers, but for Facebook as well.

The study also found that despite the immense Facebook IPO coverage in the media, most users say they are unfamiliar with details about the event, and even though they didn’t know all the facts – 44% of them said it made them feel less warm towards the stock market overall. Ouch.

(Via GeekOSystem)