EditGrid - web spreadsheet, collaboration & XSLT

EditGrid is an online spreadsheet and collaboration service developed by Team and Concepts Limited in Hongkong.
As cliff commented about editgrid, it is robust and can be used for collaboration and imo, it's very nice to transform your data information in other formats, such as XML, KML, iCAL, RSS and so on... to share or link it to other services.

Example KML for Google Maps and Google Earth

Valery’s Spreadsheet: http://www.editgrid.com/user/valery35/Locations
XSLT Stylesheet: http://www.editgrid.com/doc/xslt/Locations.paths.kml.xsl
KML file: http://www.editgrid.com/doc/xslt/Locations.paths.kml
Here is what you get on Google Maps: http://maps.google.com/…/Locations.paths.kml

more examples on tony's post on Web Spreadsheet + XSLT = Unlimited Possibility - good ideas!