Thanks Eric, but not the reply I was looking for.
The tools here are not cheap yet there are thousands of plugins (free or otherwise) that manage to have an update site. It's a convenience for the developer (us, the user) and the provider.
I can understand wanting future customers to go to the website, but existing paying customers should be considered into the overall equation. In that I asked this question quite a few months ago, I'm suprised that there has yet to be any effort to provide us a update site.