Thanks, Chris. There are a lot of good convention sources both on and off the internet, but the advantage to an Internet source is that you can easily find out about last minute changes, you can often register on-line as a convenience, get driving directions, etc. The main problem that I've found is with broken links or out of date information left over from last year's convention. Often these Internet calendars are either on "automatic" or it is up to someone from the convention committee to submit the info and they make a mess of it.
What I am trying to do to make a difference is to check each link, make sure the info is current, and go actively in pursuit of these conventions and get togethers. I have also begun to add conventions for Clowns, Jugglers, and Ventriloquists, since many magicians are also involved in these pursuits. If anyone notices an event missing from my calendar, just e-mail me and I will add it or correct it right away.