[aeorgnoieang]

> I'm sure they must have done a lot of testing to end up with this system but it basically means that I'll probably never contribute anything to their website.

I think it's really more that it just ended-up like that. It is sad that everyone 'can't' contribute, but that's okay really. Not everyone should be contributing.

But I suspect you could contribute. You mention finding questions to which you don't know the answer. Surely, for some of those questions at least, you later found an answer elsewhere. When you do, go back to the question and add an answer based on what you learned.

It's also perfectly acceptable (and commendable) to just add an answer that's a little bit better than the existing answers. Hell, just combining two or more answers into a single (comprehensible) answer is a relatively easy way to contribute (and help others).