For the love of God, Rockster is NOT a Patent Troll.
Going after companies that infringe your IP does not make you a patent troll. Being a NPE also does not make you a patent troll.
Trying to collect money using unscrupulous techniques is what makes you a troll. Sending bogus demand letters or filing lawsuits without providing enough details about infringement are perfect examples. These are all discussed in the recent patent reform bill.
Sorry, haters, but...