A site like dripable builds blog comments and profiles links but on low quality sites rendering these backlinks almost as good as useless so what kind of use can it have?
How about indexing your backlinks which can be a bitch to do manually, that is unless you have too much time and not enough sense.
That's about it though, I don't recommend sending them to your money site, but they'll help index your links and help send a little extra juice to your buffer sites.