Hey guys, great news! Jessica DiCicco, FP's voice actor will be doing an Ask Me Anything (AMA) on Reddit, a humour site (way better than 9gag or 4chan), you'll be able to ask her anything (if she has any pets, her favorite food, experience on the show, etc.) but probably not spoilers, you'll have to make an account (if you haven't already) to be able to ask her this.
She'll be on the subreddit IAmA at 1pm PST (in a few hours, so don't miss it!) on the 12th, which is today!
Natasha Allegri and Fred Seibert also have done one before, but unfortunately, they aren't answering anymore, but here's thelink in case you want to have a look: http://www.reddit.com/r/adventuretime/comments/1pzfql/fred_seibert_executive_producer_and_natasha/
They also have a subreddit for Adventure Time, which is pretty cool:
P.S. Reddit is an amazing site, there are a lot of subreddits (basically sub categories) for different things, such as cute things, funny stuff, news, sports, My Little Pony, and many more. Famous people have also used it for AmAs, such as actors, politicians, documentarists, and many more.
Also, make sure you read the rules, because Reddit is a bit more mature with grammar, spelling and behaviour. It is not a site suitable for kids (but luckily everybody on this wiki is over 13).