It's not a big project , nor something successful. It's a tool that was (and still is) supposed to help people find the Google+ profile of people they follow on Twitter (http://migrat.us).
Even if the results are not all accurate and that relying on gplus.to may not be the best solution, I get more results with it than with migratus, which is why I added a link to your app on migratus.
By scraping all Google+ profiles, it would not solve the problem of fake profiles. Anyone could use your Twitter username and let your followers think they are you. With migratus, you are sure that the Google+ profile it gives you is the one provided by the Twitter user.
Yes, but they won't be traditional QWERTY keyboard. Ergonomic keyboards (like the Kinesis Advantage) will replace traditionala keyboards and the QWERTY layout will quickly disappear.
I also think that both physical and virtual keyboards will disappear from mobile device, since it makes no sense to use a layout designed to type with then fingers on a tiny screen.