I'm talking about threads where the poster is often looking for specific info, the mechanic's forum comes to mind. The OP, posts and asks a question about how to do something, and gets several good replies, and then you never hear from them again. Basically things like that. I am sure we have all done this especially if you post a lot.

I guess i am speaking more of the poster that is basically not a regular that posts a good question, gets good answers and then disappears into the sunset.