I've read many discussions on APIs in search of inspiration to write the ideal SO client; I've also twice started writing one, but gave up almost immediately.
My ideal SO client should pull new questions very often (at least each minute), find interesting ones (by tags or who knows what), then alert me in an unannoying fashion (maybe an icon in systray?). It should also allow for different levels of interest, like: "STFU, I'm working!", "only interesting ones, please", and "whatever, please: I'm bored!".
I gave a try to some rss readers, but without success, as there are too many new questions.
In the end, the best SO client I've found till now is the browser: click the "questions" link, read the summary, be happy if interesting questions are there, click the "questions" link again otherwise.
So: is anyone successfully using something different than a browser to spot interesting questions on SO?