Traffic Exchange Directory:
Placing free classified ads is a great way to advertise. Be sure to read each sites terms regarding the rules of placing ads as it's possible to be banned from posting.
There is an excellent site where you can post your free photo Ads in 10 Countries around the world!. It's called AbleWise. Very popular site with great 'featured ad' deals.
TIP: Open a separate email account for placing ads because you may get many emails daily. At GMail you can have it set up to automatically delete any junk mail!
It's suggested to track your ads so you can know which sites are getting a response to your ads. Tracking can also tell you if you need to change your ad headlines to raise more interest. You can get yourself an excellent free ad tracker from TrackerBoard.
TIP: Some tracker links can be very long. If you do have long urls, you can shorten them, Tiny Url is just the place for that! Do that here:
US Free Classifieds