It's called MC Map, and I think source is available from this page:
Can someone remind me to phone Virgin in the morning?
I'm definitely upgrading, just noticed that they're charging me 37 a month for 20MB, when on their site it's 20 a month. 50MB is 35 a month. :?
If anyone cares, from next Wednesday afternoon the upload speed available to the server will go up to 1.5Mbps, and in mid February that will incease to 5Mbps.
Also, in 41 minutes, if eBay is kind, the server might be getting a new 3Ghz processor (currently a 1.8@2.2).
All in all this should make teh mine a lot less laggy, and hopefully will allow for Mobs to be turned back on.
So nobody get bored of minecraft soon please :@
EDIT: Also, the lass at Virgin said "Bloody hell, what do you use your broadband for? You've already downloaded over 300 GB this month :O" :'D