Yeah, it happens to me quite often too...
But i just post anyway, on the off-chance that even if this post won't get a reply, maybe the next one will
I consider myself as a reader more than a poster....once in a while, i'll find a thread and i'll read it from beginning to end.
Nowadays, I post less because i feel like i'm interrupting, as someone said earlier in this thread..But i'm happy with the occasional post