Random friend seeking on Google Talk?

Has anybody else noticed this?

Over the past several months, I’ve had a few people add me to their Google Talk account, claiming they want to make friends. The conversations start simple enough, asking basic “getting to know you” questions. Nothing seems too prying, and it certainly doesn’t seem like a bot. However, in each case, something doesn’t fully seem to add up, or maybe I’m just being paranoid. Either the person doesn’t remember how they found my address, or they claim they were just trying random addresses. Some people are from India, some from the US. However, they never seem to be able to find a picture when requested. They look and look but never manage to find one, and then suddenly have to go.

I’ve IM’d with a couple of them for a few days, a week, just to see if they were going to ask any questions indicating they were looking for specific information, but they haven’t really.

I’d feel bad if these were actually real people just “looking for a friend,” as they’ve said, but the fact that nobody can seem to give me a good reason for how they got my info concerns me, as does the behavior about a picture. Have other people seen this? Is it some new kind of weird spam/info gathering attempt? Or what?