Prevalence of Blog Spam?

For about a month, my blog was blacklisted by the new pinging service Pingoat, which considered it "spam" and "objectionable." A search engine dropping your blog like a hot potato is one thing, but another service putting you in their blacklist for spam is another. Both are never pleasant, but the last is akin to a slap in the face (ok, that's me being a drama queen).

The issue was resolved after I posted in Pingoat's discussion forum requesting that the blacklist be removed (emailing the owner did not work). Judging from the fact that their forum contains a category dedicated to Blacklisted sites, and the number of blog owners complaining about the blacklist, Pingoat seems to be trigger happy when categorizing a blog as spam.

Just a heads up if you use their service. For me, I think I'd be sticking with Ping-o-matic, spotty service and all.