I've had at least three people in the last few days follow me on Twitter and when I clicked on their profiles found they are promoting something called Mammoth List, started by Brad Fallon. Now this isn't a big deal --I have survived worse, lol. But to me it shows the problem of using a particular method like that. I suspect somewhere on the program page it suggests that members start following lots of people on Twitter, hopefully to get sign-ups. But if everyone starts doing the same thing, you start getting repeat offers. I guess the same thing is true to some extent for mailing lists. If you are part of IM, you have to get used to a certain amount of redundancy. But to me, too many repeated offers dilutes the effectiveness. After all, I am only one person and could only join something, at most, once