Are Patent Trolls Good or Bad?

There has been some recent discussion on the definition of a patent troll.

Today, PHOSITA discusses whether patent trolls are good or bad and concludes:

In my opinion, patent trolling puts the patent in the hands of someone willing and able to enforce the rights associated with patent ownership. This allows the true value of the patent to be exploited. By allowing patents to be more highly valued, I believe we enhance the whole system.

PHOSITA also provides some links to additional commentary on patent trolls.