2. Patent troll + Law firm is not a "dangerous new breed". This has been happening for a long while now.
3. It seems strange to complain about the being sued for patent infringement while owning '150' patents. Do you agree with patents or not? If you agree, then being sued for patent infringement is part of it. If you disagree, why invest so much? I understand the argument of patents being defensive, but, does that really help in a world of patent trolls? More likely, a company eventually goes under and the patents are acquired on the cheap - by a troll.
4. I think the "we will pay you a bounty to help make our problem go away" approach is interesting and I hope it works. ...but it's very self serving. Maybe just pay a law firm $50,000 to invalidate the patent rather than making a contest out of it.
To be fair, I really don't understand the concept of a software patent. If I can implement it then it is fair game.