Can some explain what the spam/fake accounts are? In my little corner of 4 or 5 accounts with 2500 followers total, and a dozen or so hashtags I check frequently, I really rarely see spam or bot accounts ... I mean they pop up but its not a major aspect of twitter for me in my daily experience. And I use twitter a LOT.

Are they counting my +1 accounts as fake? they're not, they each represent a different side of myself that's real, even if they don't bear my name. one for a site I created, one for a particular community I participate in, etc...