Add free postcards to your site , its a great tool to promote your site and get more visitors. Each time a surfer sends out a free postcards to a friend he brings you a new surfer. :-) Easy!

Add a sponsor program to that and you have a money machine or at least pay for your expenses.:-)

Good fancy graphics or funny cartoons in line with what you guess your targeted audience likes will bring better results.

Here is where you find the free postcard script  from Bignosebird

Bignosebird also has other great scripts with help how to install them, plus lots of other goodies. Great site check it out!