Your kids are really young, so I think you have to be the middle ground for them at this age. You're going to have to help them communicate with their father....it is the right thing for them.
That said, it doesn't mean you have to "be" in the middle....it just means you have to figure out a way that works for your kids, you, and your H. Scheduled times with skype or facetime are awesome. Try to think of how you can keep your kids connected with their father without being in the middle of it.
Personally, all my kids have phones except my 6yo, so I text them regularly. For my 6yo, he has an ipod, so I am probably going to get an ipad or iphone this year so I can connect with him directly. I never call my X and ask her about the kids....never. I get enough info from them via text, and a call to the X just opens a bag of worms unrelated to the kids.
