Kristin, one of the leaders on the team, runs a blog that does frequent giveaways so I do consider her an expert.
But, contacting the blog owner (during their call for submissions) would seem most appropriate. Usually they want specific information from you to determine if you'e a good fit for their audience. You can also make a soft pitch by mentioning them on Twitter, if they're active over there.
Hope this helps!
Brittany