I'd never really had a problem with Mahalo showing up in my results, until yesterday. I Googled my name, and found they were scraping my content and hosting it under a page with my name as the title and url. Yuck.
For a long time, everything I wrote would get re-blogged by dozens of spammy blogs all across the internet, occasionally with the odd misspelling thrown in to simulate original content.
That's what I thought when someone started scraping my feed. It didn't make me feel any better in the long run though. And the bigger problem is that even if you send them a DMCA notice they just take it down and then set it up again on a different domain. They are in it for the quick profit, not the long haul.