Why do you want to use your phone as a wifi hotspot ? It'll drain the battery. The telco's in the US are the worst of the lot. Android and iPhone are 2 great platforms, Im happy that both are here.
You can find tons of web-apps/apps that show the timezone(s) in a traditional form, but this one has a different take on presenting the same data. Why change the one unique feature ?
its awesome and super easy!, it took me exactly 30 seconds to figure out that I can move the slider. Pls don't listen to the old farts here who say that the site is "shiny" or "Can't figure out".
I have been programming perl and php for many years now - I don't agree with rbranson here. Its not that perl is the best tool , if it solves your problem use it , otherwise please stop whinging about it. If you really feel so strongly about the issue, you are welcome to fix it.
I like the no javascript tracking. Im struggling with Quantserve (to track our iphone app usage) - which, although supports the no javascript tracking, doesn't clearly work.
The site looks neat and simple - the graph is quite nice. Congratulations.
the blog misses a central point - its not the choice of language thats a bottleneck. I'll trade performance to large number of users any day because I know I can solve the performance issue.
Personally I'd go with perl - as thats the language Im most comfortable with.