Reading from afar, it feels like cloudflare gained a lot financially from this crowdsourcing. But I've already suffered from such patent trolls, and I actually think crowdsourcing is a very nice way to fight them.
I think it is very interesting economically speaking. By participating into the crowdsource, people are basically selling their memories, not time actually spent on the task. (though I acknowledge it does take some time, even if it's just reading the patents).
When to we get wankipatent? (short for wiki-anti-patent of course)