We asked readers about "social network fatigue," which can mean either that you're getting tired of social networking sites or that you're simply exhausted from having too much of your time sucked up by online social networking (boredom, on the one hand, addiction on the other). And, indeed, it appears that, at least among those who participated in the poll, this phenomenon is real.

43% of participants said they're afflicted and have cut back since last year, which could mean the novelty has worn off for them and the experience is no longer so fascinating, or that they've stopped shopping around and have settled into one or two sites they use regularly (which is probably good news for established networks like facebook). For the 9% who said they're afflicted but haven't cut back (the addicts?), those who are still getting acquainted with the whole concept, and those who just don't care yet, new offerings may still appeal.