Oops, I guess my original question was a bit misleading. The blog post I was trying to dig up organized the company with a US parent in order to be friendly to US investors, but that's not the issue that concerns
me.
The problem is that I'm a US citizen starting a Canadian company. The US has laws that are designed to prevent people from running all their income through foreign companies as a tax dodge. (See, for example, http://en.wikipedia.org/wiki/Passive_foreign_investment_comp... and http://en.wikipedia.org/wiki/Controlled_Foreign_Corporation). I say "minefield" because the application of these laws depends on subtleties of accounting and tax filings (not my strong suit), and the cost of screwing is are potentially quite high. (Eg, the IRS might decide that I should pay personal income tax on my company's gross revenue.)
Now, it's not completely untenable; I do know a couple of people with US citizenship that have started Canadian companies and haven't had any real problems. However, I'm thinking it might be easier and safer to have a US entity other than my personal self own the foreign corporation. Right now I'm trying to figure out what's involved in setting up such a structure and whether or not it will actually help.
Anyway, thanks for the response and congratulations on your success! What was the name of your company?