I have no problem with crowdfunded donation services... so long as the person/project the donations are being collected for has consented to it.

I have a large problem with forcibly opting me and projects I work on into this, especially since some of those projects have donation mechanisms already, and an even bigger problem with no way to opt out once in. And I have a huge problem with the implication that I or those projects have any sort of relationship with tip4commit other than one of saying "please stop this" and getting back "no" over and over.