what's wrong with shameless self-promotion?

So Seth Godin* has posted a comment where he says he doesn't think of the tribes thang as "shameless self-promotion". I don't think there's anything wrong with shameless self-promotion. Provided it's done well. If you give people stuff that is useful for them then it's fine. Bad shameless self-promotion is another matter. Taking attention ("lookatmememmeme") and giving nothing back is one of the surest ways to earn enmity short of calling someone's mother a street-walker.

There may also be a cultural issue here. Seth is American. I am English. What looks like shameless self-promotion to me probably looks like diffident introversion to him.

*Well I assume it's him. On the internet no one knows you're a lactose intolerant scuba diver.