William,
One cure (actually, an affordance) is to register the GTALUG on
meetup.com, for visibility.
I had done this in 2009, for the systems sciences community (in preparation for the ISSS Waterloo meeting in 2010). The first year at
meetup.com was free, and then they started charging for being on
meetup.com. I didn't want to continue (as an individual) to pay for the registrations, so in subsequent years, restarted on Google Sites (at
http://wiki.st-on.org/ ), with links to register on Eventbrite (which doesn't charge for free events).
As a new attendee to GTALUG events, I did a little extra searching to find the group. Right now, searching Google on "Linux Toronto Meetup" has GTALUG as the fifth hit on my list.
In the interest of longevity, it's great that GTALUG is on its own domain. In the interest of publicity, there's a large group of people who think
meetup.com is the only place that advertises meetups.