No special development toolset required, just publish a text file with the proper metadata and you're good to go. They're even planning an integrated payment system.<p>This could be huge.
I cannot see how the apps are meant to be "installable". Will Google run them on the AppEngine (or similar)? What if my app requires a set of services running on another machine?
My knee jerk reaction is this is a giant step towards the web as we know it becoming "GoogleNet". I hope they get some sizable competition in this space.
More discussion going on over here:
<a href="http://news.ycombinator.com/item?id=1361543" rel="nofollow">http://news.ycombinator.com/item?id=1361543</a>