I would have to say, don't feel obligated to do a miniature a week.
They are great and all, but even on Escape Pod, getting one every month or so, is a bonus.
I think that if you are always doing one, then when you don't people will feel left out. It also makes a lot of extra work when you are just starting out. I don't want you burning out and the stories going away.
I want a miniature, because it is just so, "GOSH DARN GOOD, I HAVE TO SHARE THIS". I don't want a miniature, because, "I have to get this out".
Too much too soon can make things boring.
Thanks.