Would just like to say I second this request. So often I grab a little region to show to others on irc and whatnot.
I see the suggestions above and those in the
FTP upload thread, but I really would like to avoid adding even more stuff to my Windows context-menu, and would like to have a really super-simple way of capturing+sharing. I am thinking the easiest would be to have Imageshack, Photobucket etc right there on the "Send to" menu in SC? Preferably you'd want a progress bar and the final url copied to clipboard - but I don't know how accessible their API's are, if it's feasible to add or not - I am simply voicing my wishes.
Thanks for your time, keep up the good work!