With Sketchcast you can record a sketch, adding you own voice and then embed the sketch flash player in your blog or page. If you register you will have your sketch channel with RSS feed.

To draw your sketches just use the mouse (a pen graphics is better) and your microphone for the voice. The possibilities depend on your imagination: online tutoring, a masterpiece of art, concepts explanation, love letters…

Free as we like it, try Sketchcast.

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Online Drawing with Queeky

Now you can draw online and share your pictures with Queeky, a web2.0 application. But there is something more, you can also see how a picture is made, using replaying function.
 
To save your drawings in Queeky gallery you must be registered, but you can test the drawing application without any  registration. There is also another cool feature: the possibility of several users creating the same drawing in a multi-draw style, you can even send some short messages. A chat to share some opinions between the users and a contest add some more cool features to this site.

You can also use a gadget to put a drawing tool in your site. This gadget let you draw and save your work in the svg, png, jpg and gif formats. Try it: