I consider myself of average social prowess, plus or minus depending on the amount of effort I'm willing to expend. Every now and then, though, I feel decidedly uncool, in a way that humanities graduate students are not supposed to. To wit, the latest example: sending an (over-?)enthusiastic email to a new-ish friend about some good news pertaining to her and her boyfriend, in which I alluded to a conversation we'd had a month ago, both mildly liquored up. Now comes the moment I often fear when a friendship is getting off the ground: was I too forward? Puppy-ish? Overeagerness is decidedly not an attractive attribute, but the "over" in "overeager" is a variable dependent on the situation, on the "coolness" of the parties involved. Transparently assuming an intimacy that doesn't quite exist yet can be a gesture of friendship, or it can be an unwelcome imposition that makes the addressee want to step slowly away.
(Commenting on unfamiliar blogs can take on this texture as well, since (in my mind) some bloggers are "cool" enough to shy away from my presumption. Perhaps if we spoke a language that had the familiar/unfamiliar second-person pronoun switch (the "tu"/"vous" distinction in French, for example), this difficulty would be lessened.)