It seems that Twitter may be taking a stand against the practice of selling followers for cash. uSocial, an Australian company that became rather infamous for trying something similar with Digg, has apparently been directed to stop spamming the microblogging site.
Twitter Upgrades Follower/Following Relationship Maintenance
Twitter is in the process of rolling out "a major performance enhancement" to its system, which deals with how users’ following and follower relationships are maintained.
Twitter’s Follower Limit – Good or Bad?
Twitter has had a limit on how many people a user can follow in a day (1,000) in place for some time, and on Monday the company said this limit was not being consistently applied to all accounts, but that it would be from here on out.
Twitter Bug Torches Follower Lists
A slew of Twitter users posted this morning the disappearance of significant portions of followers and followees from their accounts. Has Twitter lost swaths of user data? Or is it the side effect of ousting "aggressive followers," who Twitter equates with spammers? Are followers worth much?