I’ve been playing with Googles Fusion Tables, specifically the map function, & for a free service it’s quite impressive.
Data can be uploaded in several ways, via traditional file types (txt, csv, xls), linked to from Google Docs, or simply pasted into a fusion table.
Here’re a couple of examples that I’ve put together:
a map of crop circles in the UK from 2009
data courtesy of The Guardian, data & coordinates here
heat map showing US debt by different nations
thanks again to The Guardian
Sad as it may sound I enjoyed putting these together, I’m to make it my mission to find & mash data 🙂