This is really cool and useful i.e. Attaching files to GMail by drag and drop! Especially for people who send lots of pictures as attachments. In that case, it is really tough to choose every single file and then attach it. This feature sounds interesting

Not just GMail.

This can also be great for uploading screencaps to your Blogger blog or any other blog software that allows uploading by browsing from a local folder. Next time you need to attach or upload something, just drag and drop. You no longer have to click Browse, look for the file, click the file, and click the “Open” button just to add that file.

Neat!