ququ wiki - Learn About Anything in 10 Words

So I type in a question and it takes me to an empty wiki page, inviting me to add an answer. However, first I must login using my Facebook credentials.

Have I got that right? If not, it could do with explaining. If I have got it right, my advice is that you need to start populating it first, before you try to get people to contribute. In short, for every 100 readers you'll get one who might contribute. There needs to be content to get visitors, and even then, you need a lot of traffic to make it self-sustaining.