Wikis?

Wikis seem like such a great tool for the classroom according to everything I have read, but I really can't figure out how I could use it in the program I currently teach.

I guess I could have the students create a wiki for their year of Spanish, with each new page entailing the new sentence structures they had learned and new vocabulary, but that just sounds boring. And, what would be the purpose of it?

If I were teaching high school Spanish, I could probably come up with some neat ideas. One idea that comes off the top of my head is a resource for verb conjugations. It could have the rules, examples of the major verb types (-ar, -er, -ir, and irregulars). Then, it could have some real examples of the use of the each type of conjugation. For example, there would be a page about the present tense and perhaps that would be accompanied by some dialogues that naturally would use the present tense. I think this type of wiki would have a lot of use for the high schools for studying purposes and also a relearning activity. They would have to make sure they really understood the information, because they are sharing it with the entire class. I think I would try to get the teachers who got the groups after me to allow the students to expand their wikis and continue having access to them.

The problem is, I don't teach high school Spanish (yet). So how can I use wikis in the program I teach now? I think I'll have to keep thinking about this one.