I signed up and was approved earlier this week and am impressed so far.
I use Dripable to build a two tier link structure, so I have the links going to other sites (not my money site). I'm not too concerned about the quality of every single backlink, since I value the combination of blog comments and profile links more.
Dripable's interface is responsive and easy to use. The reports are downloadable text files with all of the blast's links. The reports on my trial account are divided between Profiles and Blog Comments, and appear at different times during the day. On a typical day I login to find a report for a project's Profiles and come back later in the day to find the addition of a report for Blog comments.
The only thing keeping me from dropping other back link building services I use in favour of Dripable is the lack of support for scheduling. Dripable selects blasts in a round-robin from your listing of running (non-paused) projects, so if you want more control, pausing projects can help. Yet scheduling, offered by other services, is probably the most important feature of a service like this to get the best consistency over time.