So you want to use an Avatar huh? - Here's how.
In order to use an avatar, you need to first save it onto your computer. Right click it and select save as, and save it where ever you want. Then in neo, look at the top left of the page for the link that says profile, click it, look for the link on that page (left side) that says "Edit User Bio/Picture" (or for right now - click Here - and it will take you to the page) - Then scroll down to where it says Profile Picture - click browse and find the picture you saved. Click finished and your done.
Most importantly - tell me which avatar you want to use. ;)