You're solving the wrong problem. Apple has removed this from their appstore to save on headaches: so they can't be accused of being lax on patent enforcement.

You're solving the wrong problem. Apple has removed this from their appstore to save on headaches: so they can't be accused of being lax on patent enforcement. But once the court case is over (assuming the patent holder wins) such software will be ILLEGAL, regardless of whether it is a web app, what OS it runs on and whether or not it is open source. Software patents are the problem, and the only place they can be fixed is in the US Congress. (The rest of the world can't fix them because of pressure from the US. The US, Congress though, thinks it's immune to pressure from anyone else.)