Quoting Mark Brown <broonie@sirena.org.uk>:
What would be really useful here is the ability to set up the BTS to subscribe you to bugs you've filed by default. That avoids the issue with confusing less technical users.
That is exactly what I was going to suggest - with the addition that the message you get sent after submitting the bug included the fact that you had been subscribed and a link to click to unsubscribe easily.
Colin