On a side note: if you use Google AppEngine, you already have SPDY support (as long as you visit your app via SSL, which usually requires the .appspot.com domai

On a side note: if you use Google AppEngine, you already have SPDY support (as long as you visit your app via SSL, which usually requires the .appspot.com domain). Of course, if some services you use aren't served via SSL (I'm looking at you, Disqus!), then you get the big ugly 'mixed content' warning. Moral of the story: if you run a web service with an API or embedded javascript module, make sure the entire stack can be run over SSL!