I use urlsnooper on a bunch of different sites, and to quickly get the right stream out i always use the filters, but there is no way i can remember the filter settings for every website.
So what i do right now is plot it down in a text editor, website, protocol filter, keyword filter, also search for. And then go back to that text file to see what filter settings to use.
How about having the filter settings saved/loaded with the favorites feature?