Congrats! They're silly cars and everyone will make fun of you for it, until you remind them that you get 50MPG.
Regarding acceleration, I've found that quicker acceleration seems to work a little better, provided you're not going to have to slam on the brakes right after getting up to speed. I usually end up going at least as quick as traffic. Your money maker in the Prius is how you drive after accelerating. P&G is easy and very effective if you're under 40MPH and traffic allows.