Bookmarking Demon help

I've had it for a few months and have had a hard time getting used to it.

A few questions:
For account creations, do you need gmail pva's or do non-pva work fine?
How many bookmarking sites do you recommend using?
How many accounts per bookmarking site?
How many bookmarks per site?

Thanks

I'd like to know how many accounts you have on BMD too. Anyone? :O