I only signed up for SourceForge so that I could make MAF available as an open source program. Using the SourceForge web site is a very frustrating experience. There are so many things you can do that actually doing any of them is far more difficult than it should be. The help pages are hopeless. For example the information on how to create a new project is hopelessly incomplete, and I had to contact online support to find out how to get my source code into Subversion. I wasted several hours trying to find out how to do this, and can’t believe there is no simple step by step guide for doing this.
The trick is you have to check out the project before you can add files to it.