I'll be opening our Mainstream version of Linkspun to LS users tonite or tomorrow. The only reason it's been this long already is we're working out some tweaks, adding some features, new tables, and the structure for our upcoming features etc, before getting all the existing users in for a quick few days to week before opening for a broader testing with a couple hundred mainstream users.
I haven't made an announcement yet to them as I'm still working on a few things before doing that, it's basically ready, just some finishing things to ensure it goes off hitchless.
It's going to be a monster
EDIT - I've checked around and found maybe a dozen sites that facilitate link trading to the normal webmaster (mainstream), I can say with confidence that upon opening and without much addition of features, we'll be the best solution by far.