LinkedCells

Instead of emailing out spreadsheets, you share your data from inside Excel. Quit worrying about having the latest data and forget about trying to merge "dueling versions." Continue using your spreadsheet, but include automatically updating data from your associates in your spreadsheet without cutting and pasting.

Or publish your data and colleagues or clients can use it in their spreadsheets. You can distribute data to as many people as you want, or consolidate data from many people into a single spreadsheet.