Docs
What sounds better? Creating a spreadsheet, emailing it to several coworkers for their feedback and spending hours rebuilding the master spreadsheet, or creating your spreadsheet, sharing it as an online Google Doc and allowing co-workers to contribute their edits directly to the master document without you having to reconcile their changes? The time you save by not hassling with attachments or having to deal with multiple copies of the same file lets you get to the priorities that you never had time for before.
