Wikipedia is becoming a resource. What more can we ask for? I also answered, like this:
"Here's a hint for your homework: Look up: http://en.wikipedia.org/wiki/Gulf_stream"
It hardly delayed the expansion of Wikipedia. On the other hand, I do think a place or list for people to ask questions of this kind is a good idea. In fact, it would be helpful to us in finding out where we should focus some of our energies to fill in incomplete articles. We could link to it from the Main Page.
Danny