I've used to trade tapes, amassing over 400 hours. But I find CDR's easier and quicker and cheaper, and I've allowed all but one of my decks to fall into disrepair. So, I no longer trade tapes.
I also live a pretty busy life (don't we all), so I'm rarely trading, sometimes I'm doing more mundane things like mowing the lawn, washing the dishes, whatever, the point being don't take it personally if you send an unsolicited request and I can't accomodate you.