Haha, yes, I can definitely see your software being a somewhat uncomfortable conversation subject at an interview.
As for bundling, BeautifulSoup is covered under the python license, which allows for redistribution. Urlgrabber is covered under the LGPL, so same deal. As long as you provide the source, you should be fine. I am not a lawyer, however, and this doesn't constitute legal advice.
You might end up being offered some sort of cooperation program by the sublimedirectory.com people if it does actually "go huge". Web interfaces are slow and they suck. Depends on how they make their money though...