We went to the Blast in Eagan yesterday and I thought I'd tell you about it for your blog...
There were a few really big slides and a lot of tunnels to crawl through. My older DD (she is 7) had a really great time and could have stayed there for hours. I would definitely say that kids younger than 3 or 4 will have a tough time. If you want to go through with them then it would likely be okay. There was one very small section for toddlers, but it was overtaken with big kids, so I doubt any little ones could play there.
There was absolutely nothing for my 6 month old to do - but he did enjoy watching the other kids!
Overall, if you have older kids then the Blast is worth it...younger kids, maybe try elsewhere.
I do have a few super lame/bad pics if you want them.