With Google drawings you can easily create, share, and edit drawings online. Here are a few specific things you can do:
Edit drawings online in real time with anyone you choose, and invite others to view your edits in real time.
Chat with others who are editing your drawing, from within the drawings editor.
Publish drawings online to the world as images, or download them in standard formats.
Insert text, shapes, arrows, scribbles, and images from your hard drive or from the Web.
Lay out drawings precisely with alignment guides, snap to grid, and auto distribution.
Insert drawings into other Google documents, spreadsheets, or presentations using the web clipboard, then tweak them inline.