I never added this feed

Today I found my reading list full of articles from the Gawker RSS,
which I've never heard of. I went to my subscriptions to unsubscribe
and didn't even see it in the list. That would be called a software
bug. Luckily I get to scan through all the articles (to mark them read
and get them off my list) since there are no useful functions like
"Mark Read from this Feed".