What’s Your Favorite App, Scott Stratten?

I’ve been asking folks at SXSW for their web working advice, as well as their favorite web app so far this year — not necessarily a new one, but one that they find themselves using all the time.
Here’s my short video interview with Scott Stratten of Un-marketing.com.

Statten’s an expert in viral and social marketing, which he calls “Un-Marketing.” He has a lot of followers on Twitter (45,000 plus), and also does a mean karaoke performance (photo here to prove it).
Stay tuned for more video interviews from SXSW.
What is your favorite web app so far this year?
For the GigaOM network’s complete SXSW coverage, check out this round-up.