We ended up deleting our SLS account after a while, we didn't seem to get much use out of it. We still like Kasidie and Quiver (handles in our signature). These sites seem to be very regional in their popularity, I guess, though SLS is more universal.
We've been on both SV swingvillage and SLS for years as Moressome13. SV hasn't done any updates for years and this year we're going to let it go and stay with SLS. All these seem to be regional. SLS is Wisconsin/Chicago but SV is more Des Moines and Omaha.