GAE and Django: What are the benefits?
GAE is a great tool for new and small projects, that do not require a relational database. I use a range of web hosting solutions. 
1) I built www.gaiagps.com on the App Engine, because it was just some brochureware, and a tiny key-value store for the blog part.
2) My colleague also built a web crawler on GAE, because it was just some simple Python scripts that collected web pages. That app actually sends the data over to EC2 though, where more work is done.
3) I host www.trailbehind.com on EC2 because it uses a geo-database (PostGIS) which you would basically have to implement yourself on App Engine.
4) I host TRAC and SVN on WebFaction, because it's off-the-shelf for any slice there.
If I need to do a site in a couple of days, I use GAE. If it's a large or existing project, or has a funky database, I use something else.
Currently I have a website on the Google App Engine written in Google's webapp framework. What I want to know is what are the benefits of converting my app to run with django? And what are the downsides? Also how did you guys code your GAE apps? Did you use webapp or django? Or did you go an entirely different route and use the Java api?
Thanks