Okay, so a while back a left a message on Siberian's talk page about this.
There's a feature called AjaxRC which automatically refreshes WikiActivity without reloading the page. It's a useful feature that many wikis use. One of the biggest advantages I think is that I can help admins keep track of the activity better.
I made a list of Wikias I had been on with this:
The Youtube Poop Wiki (The wiki I'm on most of the time)
Sonic News Network
Bloons Conception Wiki
Sonic Boom Wiki
Sonic Parody Databanks
Minecraft Pocket Edition Wiki
So I think it's a good idea to install it here, installing itself can be pretty annoying, but once installed it's great to have.