Google Chrome extension drag2up uploads files to the web and inserts the URL into any textbox on any web site with nothing more than a drag and drop.
Once you’ve installed the extension, you can head into the options, which will let you choose between uploading to a ton of web services including imgur, imm.io, imageshack, flickr, picasa, github gist, pastebin.com, mysticpaste, chemical servers, dafk, hotfile, dropbox and cloudapp.
Then, just drag and drop into any text box anywhere. Huge time saver!
drag2up [Chrome Web Store]