I don't know if your idea is original - but it hasn't (?) been implemented yet - so implement it, if know how! Maybe make it a greasemonkey script - then hook

I don't know if your idea is original - but it hasn't (?) been implemented yet - so implement it, if know how! Maybe make it a greasemonkey script - then hook into Wolfram Alpha and display from that. GeoIP might not be too big on an issue, either... Ultimately, it's not about whether the idea is original, but how the idea is executed. Think about it - how many social networks were there before Facebook? It isn't like Facebook is original, or the first, or even the last! Similar with Google (do you really think there won't be something that takes over Google's position with search, or does it better, or different?). Don't worry about originality! Just take your idea(s) - and try to execute them - worry about what you can control, instead of what others control.