Why would you want something free if you can get money from Ad Sense? Google is very generous when it comes to this so if you are getting a lot of website traffic, i suggest you try out ad sense. Earning a little from this can also benefit you in the long run.

Search for search engine submissions.

There are some reciprocal links at the bottom of my web page to submit your site to various search engines, you could put the links in small txt on your pages.

Don't know how good they are but my traffic is very low over 2000 hits in 1500 days.

see ampair.tripod.com for what I did.

I got a bundle of products and services to advertise. Email me at semajd89@gmail.com and lets talk business. The name is Andre by the way.

Try adsense !

hi.. im developing a kind of start up social network with blog-like thing.. but, there's kind of lot of empty space around my site.. so, i was thinking of putting some ads.. not too much.. just enough to fill some holes.. i'm not planning on generating any revenue.. not yet.. so, i'd like to offer free ad space.. is there any such service? i couldnt find any.. any service that would accept low traffic website for their ad service should be acceptable too..