There is a Google Lab feature to add images to the message body. But what about if you want to instantly share images or screenshots in Instant Messages like Gtalk, Windows Live Messenger chats etc or Twitter and Facebook? iClippy is a complete solution for your online clipboard.
Adding screenshots and images From the clipboard
Adding screenshots by iClippy is simple. Download the iClippy desktop client and install it in your computer. After installing, sign-in to your iClippy account with your Google account to grab the software key. Once activated, an iClippy sidebar will appear to your Windows Desktop to add screenshots or images from your computer to Gmail messages, Facebook, Twitter, WordPress, Blogger etc. Even, you can share any image file, located on your computer or the screenshots with your friends when chatting, by simply pressing a hot key. You can also insert images from scanner, camera, USB.

The best thing of iClippy is that when you copy an image file or take a screenshot using the desktop client, a window drops down asking you to upload the images at your iClippy account. Another interesting feature of the client is that you can use Smudge tool if you want to hide some part of your image or OCR tool to extract text from the images or screenshots.

After uploading the image to your account, you can insert the image or screenshot into your Gmail message body or can share that in Instant messengers like Gtalk, Windows Live Messenger etc by pressing a single hot key(Ctrl + V).
See the video of how to use iClipping
As all the images and screenshots are stored at the iClippy online clipboard, you can use it later by simply copying from the sidebar widget. Those who frequently use images in their mail or need to share images or screenshots when chatting with friends can find this utility as very useful.

Nice tutorial :).Will try it.