Re: Changing blog avatars?
Take a look at your admin menus for BuddyPress and Site Admin.
If you are running an older version of BuddyPress (before revision 1311) look in Site Admin -> BuddyPress. Otherwise the latest trunk has a new top-level menu called BuddyPress (look in General Settings).
View an example of the avatar menu.
And… this probably isn’t a support topic, right? 
