Way back in 2005, I increased same day sign-up conversions by over 20% for a product receiving over 20k new sign-ups/day. The feature took only 3 days from concept to deployment. Lesson - good design matters, and being able to make smart changes quickly really helps.
2011 Wired Magazine 400 Essential Tools - Boxcar
2009 Macworld App Gems Award - Boxcar
2006 Webby Award in Social Networking - JDate. (We beat Myspace, Flickr, and Bebo for being more social w/ a subscription-based freemium product. Crazy, right?)