I have the same problem.  Torrents/trackers from other sites will continue to seed after I've completed my download and give me good ratios.  I tend to think there is just a different type of user for this site and for some reason the demand is not that high.  Which is very odd as, of the four sites I visit for torrents, this one has by far the largest offering.

Or the site owners have found a way to get people to donate to get their ratios up and not lose access by managing traffic…but that's just a conspiracy theory.  Doubt that would happen.

I have the same concern.  I can keep things available to seed for days and uTorrent will show my share ratio is often < 0.50 for any given torrent.  And of course my ratio on here continues to drop.  I have donated a couple of times to keep my ratio higher to try to offset the issue, but my ratio continues to be eaten away.  As far as the suggestion to get the most recent torrents and seed, I don't want to download something I don't want with just the hope that it will up my ratio (when there is no guarantee).  I'm not in any kind of danger at the moment of dropping below Rationator requirements, but I'm still concerned.

Maybe it's just the nature of the users on here and that I'm just SOL.

Anyway…thanks.  Any other suggestions would be great.  I may have to just start packaging together some things to upload.  I have a lot of "tube" videos that are great.  I suppose I'll begin sharing those.