Browsing is just that - browsing. I don't think anyone is required to send me a note or an emoticon just because they view me or I them. As far as matches go, there's only so much a computer can do. Some of my friends never came up as matches, but we get along splendidly! If I'm walking down the street and see an attractive guy I'll browse the heck out of him, but if he makes eye-contact we both can decide then and there to communicate more or not; most often, it's not.
I've been off the site for a few years because of an engagement that fell through. I'm just happy this site is here do to exactly what Jerry mentioned. I learn and mingle on the forums; if a match comes around I always take the time to look them over, and about half the time I'll send them a note. It's the only way to make stuff work, you know?