I have been a member with Bolt for a while now. I visit briefly on most days, as I do here, and its easy to see that there is a close relationship between the two forums, at least as far as book releases are concerned.
I don't much agree with the post count requirements on Bolt, but that may be because I'm not very chatty unless I really have something to say. I hate two sentence (agree - disagree or thank you) posts, and refuse to resort to that. And the severely limited choice of filehosts is another point of contention. It resulted in thousands of dead links in the wake of the MegaUpload drama.
Aside from that it is a very nice forum, and the eBook section at least exists in a spirit of cooperation. For me the important thing is the release and improvement of books. Each book, author or series has a thread; and each member is free to add, renew or improve on the selections within without having to adhere to standard guidelines and formats. I means that dead links are replaced fairly quick if a request for a certain book is made, because anyone in possession can just add it to the thread. And some of the members make it a hobby to fix up, reformat bad products or convert them to other formats, and can add their improved versions without fear of repercussions. And new releases of a series or author can just be added to the original post for the convenience of the clients. In my opinion these things have a positive impact on the quality of the freely available digital books on the net. And the use of indirect links (copy/paste) is something that deserves consideration in these days of persecution.
Each forum has strengths and weaknesses. In the best of worlds an ideal forum would perhaps have to be an amalgam between Bolt and Mobilism.