AddDate
What?
When you select images in Picasa and push this button, the "Date taken" of the file is added to the file name in YYYY-MM-DD format...
Remark: if your pictures are stored on a NAS, and you have unsaved edits or added name tags to the picture in Picasa, you might loose those!!!
How to install?
Create the folder C:\Tools\PicasaScripts\ and save the following files in it:
Install the button in Picasa using this link:
Remark: ExifTool, the 2nd file to download, is a great tool written by Phil Harvey. His website can be found here: http://www.sno.phy.queensu.ca/~phil/exiftool/