Is It Just Me?

I've been pondering this quite a bit of late as each time I comment on a certain blog I get a pang of feeling unwelcome - but I don't know why. And then I thought - am I just being paranoid? Am I actually ridiculously pathetic and should stop bothering myself with this forthwith! Is there some form of blogrollers etiquette that I should be aware of? Ie: am I not on their blogroll because even though I comment on their blog I don't qualify for the blogroll as they don't read mine. The thing that irks me a little is that they are on my blogroll so you think they would reciprocate?
That reminds me - I must update my blogroll! You see - maybe it's not personal at all - just slack on their part and awfully over-dramatic on mine? Apologies to all my commenters and readers that aren't currently on my blogroll...and for my current state of woedom.