I am selling ad space on different Java Smartphone applications (Scientific Calculator, Graphing Calculator, Stop Watch, Complex Numbers Calculator) with more than 200K Unique Downloads per Month (cumulated). The Ad can came in different forms like: 1. A splash screen on opening with: "Powered By YourCompany" . 2. A Constant message on every form and window with your text. 3. A text/image link to your website. 4. A combiantion of the above. PM for details and prices. Cheers!