Here's an interesting site I just discovered by catching their bot indexing my site just now:
Become, Inc. is a venture-funded start-up that is building the next generation search engine for shopping. We are developing an innovative new search engine technology that will significantly improve the online shopping experience.
The founders, Michael Yang and Yeogirl Yun, also founded MySimon.com. Things are getting really interesting in the search space these days. Sounds like they're a competitor for SHOP. :-o
I recently did an interview with them. They're launching Feb 10th. I'll be posting more info on MarketingShift so stay tuned.