I am trying to promote my webservice and looking for your advice

Here is what I tried so far:
Adsense - Spendt $1000 without any real users. I get the visits but they just seems to disappear.
Stumbleupon - Spendt $25 but had much worse bounce rate then Adsense.
Buying sig links at Digital Point - Tried a few and get some hits now and then but no users will stick.
EasyTraffic.biz - Got lots of hits! Only problem is that I found out they are sending hits via iframe which means that no one actually sees my website.
My concerns is that users dont really know what my website is and do. Could you check it out at http://www.geedo.com and let me know if :
1. You understand what it is
2. You find it useful
Also if you could give me advice on how I can market it better and/or how I can make it easier for the user to understand what it is and do I will be forever thankful
