Pallets... go find them, they're free~

I've been on a quest for a new coffee table. I originally wanted to created a pallet coffee table like the one below but I've moved on to a new idea. (Stay tuned, it's almost done) However, I did become quite interested in other ways to use pallets. I hear they're free... I like free... now, where do I find them?

Joy Ever After

Life on the Balcony

Homedit - a number of ideas!

Tip Junkie

Instructables

A Greenpoint Kitchen

Just a Girl

Better Homes and Gardens

Craftzine