They suggest random people to me, too. I sometimes get friend requests from random people whom I don't know and strike me as partying airheads, judging by the images they have posted.
I just find it hilarious is all, I mean they've hit close to home a few times (By that I mean they've suggested somebody that either lives/lived in my city or people that were on my old account) but other than that I can only assume they're going off of my name or interests, so they're grasping at the thinnest of straws.
I only accept friend requests and only if I can recognize them.
I'm pretty much the same way, I don't feel good about sending friend requests honestly, I feel its too forward.
Though since I don't have anything filled out I don't get friend requests either. Kind of defeats the purpose but what are you gonna do?