The current Search API has a lot of rate limiting issues when used on App Engine (User Agent just doesn't make it work) making it unreliable. I have an app (http://www.connecttweet.com/) that a fair amount of people (for what it is) are using in Alpha mode that I'd like to make publicly available but I don't feel I can until searching is more reliable...
OAuth for Search would be perfect, I am searching on a users behalf as part of the app and already have their tokens. Can you shed any light on when this will be possible? I'd offer to be part of an alpha or beta on your end just to get this problem resolved. Thanks, -Ben blog: http://buildcontext.com