This site has all sorts of stuff that lets you get a better idea of what’s happening on a server and where things are up to with various cities. Currently it only works on EN servers.
Use with care because whoever runs this site can likely see all the info you post to it - oh, and choose a different password rather than re-using your game password, duh!
One of the really cool features of this site (even if you’re not logged in) is it’s map generator - you can hover over cities to see details about them. My cities shown in red on the image below (just a static image, rollovers won’t work here in my blog):