I'll be adding some more sources soon. Streamified needs to be added back. Also considering a few other sources like Hacker News, Youtube and maybe Flickr.
Overall switching from Python (Tornado) to Go was a pretty good experience. Once I got a handle on the template package it was pretty easy sailing. The only non-standard library I used was gorilla/mux for some url routing.
I do think that the end result code is more manageable than what had turned into a pretty monolithic python script before. I also found using goroutines much more enjoyable from a programming perspective than tornado's callbacks and/or tornado.gen.
I did drop the multi-search functionality that unscatter had before. For those who didn't use it, as you performed searches it would queue them up making a big url you could book mark then quickly return to your searches. Right now I'm considering doing some sort of log in process and providing that functionality and maybe some other stuff at a premium. I'll also be experimenting with some forms of advertising. Trying things like infolinks on search results wasn't really working out.