“Quick Sketch” Functionality

Email clients would benefit from a simple pluggable “sketchpad” interface that would allow the user to quickly (specifically, quicker than doing it in photoshop and uploading and attaching the image) sketch something out and embed it directly into the email. I think the drawing interface is possible in javascript, the image generation would happen server-side. I haven’t seen anything like this yet (a javascript sketchpad that outputs a gif/png in its place via AJAX), but correct me if I’m wrong.

This could also have applications in blogging, project management, groupware – any online application where ideas would be more efficiently or effectively communicated visually.