Updated: the third step isn't working at the moment, because that service has closed its doors for a while. We'll let you know if that changes.
If you've launched a Twitter account for a company or project, you've faced the same problem we've got here at Social Signal: how do I translate all the follows and followers on my individual account into a set of follows and followers on our Social Signal account?
There's no way to move my followers to @socialsignal, except by renaming my @awsamuel account, and then what would I use to twitter personally? What I can do is get Social Signal to follow the same people I'm following personally; that will give me an easy way to get into a conversation with my new @socialsignal hat on, and encourage them to follow our @socialsignal account too.