No, thanks. I’m fine.
Sometimes I want to point out grammatical or technical errors in “private” blog posts. Sometimes I have to “login to comment” and then I leave.
Sometimes I find errors in “professional” blog posts. Sometimes I’m asked to make an account to “share my opinion” and then I leave.
Sometimes I discover mistakes in online newspapers. Creating an account is obligatory if I want “be part of the community”. I don’t care for online newspapers anymore.
Sometimes I see a typo or some other error in a Wikipedia article. I could propose an edit anonymously. I’ve seen enough “revision history” pages to not bother wasting my time.
Sometimes, even after 15 years of using Web 2.0 functionality, I can’t wrap my head around this stuff.