Here is a quick tutorial:
1. start with adding gadgets by url to google sites
2. next, create a hello world gadget using this:
http://code.google.com/apis/gadgets/docs/gs.html#Scratchpad
3. next, learn how to publish that hello world gadget
4. next, add an iframe to that hello world gadget
5.
Less specific, I don't really know that it's possible to do that, I'm
asking about integrating a web app developed with the Google App
Engine then linking it or displaying it or running it in conjunction
with a Google Site. How's this, Is it impossible to use anything
that's worth it, including
Google Sites sites are just static content. You could use iframes to
display your app engine app within a Sites site, but if you want a
truly dynamic website your best bet is to ditch Sites altogether and
just build your site entirely on App Engine.
On May 4, 2:52 pm, Banaticus
I agree with wooble but you can use google gadgets to link google
sites with app engine as long as you don't expect too much regarding
logins. Log-in works great in firefox but no other browser (maybe
chrome).
I put up a demo gadget that links my google sites to app engine via a
google gadget.