Concerning avatars and signatures.

[Lke]

The following rules concerns the authorized avatar and signatures sizes.

Avatars: 200 by 200 pixels.

This is the maximum authorized size for avatars: your avatar's width and height can not exceed 200px.

Signatures: 600 by 200 pixels

This is the maximum authorized size for signature: the signature's width can't exceed 600px and the height can not exceed 200px.
If your signatures contain more than one image, all the images together shouldn't exceed the limit of 600*200px.

Sanction:
If your signature or your avatar is out of rules a staff member will tell it to you.
If you don't change it quickly, or if your images are really too annoying, it's will be deleted by a member of the staff, and you could get warned.
If you persist in putting a avatar that exceeds the limit, your right to have an avatar could be retrieved.