Check out this site from Pedigree in New Zealand:

http://www.doggelganger.co.nz/

It uses facial recognition software to match you up with a lookalike dog who you can then adopt.

Adorable use of technology combined with a philanthropic angle AND a play on words to boot? You had me at woof!

Sadly you can't adopt from the States (yet!), because I would totally take Holly home, even if we're not exactly twins.

Just-launched Consmr allows you to check-in to a product a la Four Square, but instead of bars/restaurants, it works with your favorite goods:

http://thenextweb.com/industry/2011/06/14/just-launched-consmr-lets-you-rate-review-and-check-in-to-packaged-goods/

You can sign up for Beta here:

http://www.consmr.com/my/register.php

Can't wait to brainstorm around this one...