
I've found that using a Dialogue in a course is a bit of a one way street, I answer the student queries but the students are pretty poor at answering my queries. They get sent an email which they may get and they may understand, and there's a "flag" in the recent activities block but that again is easy to overlook. Thus the Dialogues Block

It's only one extra file which is attached. If you want to try the block out, first create a new directory called dialogues in the blocks directory. Then copy the attached file into that new directory. With the file in place login as admin and it gets (magically) installed. (If the installation message doesn't appear immediately then still as admin go into the Administration page. Then as, teacher you can turn editing on in a course and at the foot of the right hand block there's a drop down list to add a new blocks. The Dialogues block should now be in that list.
All good stuff, the only downside is you do need to be running Moodle 1.5 unstable as it's one of Jon's "new style" blocks (I believe). [Perhaps Jon could straighten me out if that's not correct.]
I'm now sitting back waiting for the flood of responses from my students to my outstanding messages to them. Well, I can hope...

Ray