Best Social Networking Sites to Market Your Business/Site

[MoolaMan]

I'm a huge fan of all that social networking sites have to offer in terms of free promotion for a business/website. As such, I wanted to start a thread that listed the BEST social networking sites to promote a business/website. I'll start the list, but please add on:

EBAY - Really obvious, but people overlook it frequently. For the right types of businesses, online stores can be very helpful

MYLOCALSPOT - Like a MySpace for small businesses. Create a free profile with pictures, business description, products/services list, current specials and a link to a website.

CRAIGSLIST - Again, often overlooked. Millions of people search it, and you can really hit a great niche audience. Better for service based business, but definitely worthwhile.

SQUIDOO - Make a webpage to hype a site/business...or...use it to hype a current promotion that you're running. Very cool.