All you got to do is go to your settings and go to your profile or account or whatever. Go
to the avatar thing and click browse. You should be able to find a picture in your
computer to fit in here (80x80) OR you can go to a paint program on your PC and on the
internet. If you do, go on Google and click graphics on the top left corner. Type in a
type of picture you want and multiple pictures sould apear. Once you find a picture you
like click the right of your mouse and copy it and paste it on your paint thing. Make sure
it's 80x80 or it won't work (you can also draw something like I did on the paint program).
Once you pasted it and made sure it's 80x80 save it on your computer and THEN press browse
on your profile. Go to the picture you selected and viola! You got a picture!

thx man but how do i know its 80x80?

Right click on this, View Image Info. It'll say it's 80x80.

Right click on this, View Image Info. It'll say it's 100x100.
If you're searching with Google Images...

Hover over the image you want, and look at the properties listed beneath it. It will show
the size. This particular image of a magnet is 300x300.

If you already have an image and can't tell the dimensions...

After highlighting image of Sigma from Mega Man X, its details will be displayed on the
bottom of the Windows Explorer window. This particular image of Sigma is 80x80, and it
usable as an avatar here.

inb4 you have a mac

First off im a girl and second if you get the wrong size of the pic, it'll TELL you( I
made my pictures on the paint program and I had to guess).