Hi Peter,
As Gordon says in his reply, this looks like an exciting idea. However...
> How do we make the self-help experience better so that more people can have more of their questions answered?
or rather ... so that more questions get more relevant answers...
> But as you type text into the subject line, an area on the right side of the page dynamically updates with other users' posts that relate directly to what you are entering into the subject line.
What about those (not so infrequent) message subjects like: "stupid thing", "just learning, and feeling lost", "Help needed desperately", "Really URGENT! Please help", etc. ? They won't bring out much help, will they?
The helpfulness of these Moodle forums can certainly be enhanced by some technical devices, but more importantly, people who ask for help have to learn a) how to help themselves b) how to formulate their problem to get a better chance of getting help c) to be patient d) to take the time to observe the rules and customs of these forums. People giving help have to observe the same rules, plus a) try to elicit from help-askers the information necessary to understand their problem and b) take the time to test their "solutions" before posting them... In other words, no amount of technology (be it Ajax or otherwise) will replace human common sense and a strong sense of community, the latter being a characteristic of the Moodle community (and of many other discussion board communities).
Peace (as Anthony would say),
Joseph