On the social site Gaiaonline, a Rally is a wal-around flash space where you can show off your avatar. A rally avatar is dressed up to show off wealth and usually ends up looking like a messy train-wreck. These avatars usually have things like "The Lusty Scoundrel (Glistening Skin)", "Panda/Bear/Cloud Slippers" and various amounts of sparkles equipped to their avatars.
Jane: "Ugh, this thread is full of rally avatars, I'm outta here."
*navigates away from Rally page*