If we look at community user profiles (meta as well as main), we can see:
Randomly poke old unanswered questions every hour so they get some attention
So sometimes I see old question poked and put on the front page of active questions. Most of the time when I see this, it is about a question with some tags with some answers from me: For example this morning I saw only poked questions with the tag emacs.
Does anyone see the same question(s) poked or is it user dependent?