XenForo Site Logo (1 Viewer)

[Senkusha]

I installed XenForo early this morning, and I've just about have the appearance to look the way I want it, however, there's still the issue of the Site Logo. Currently, it's xenForo, which is misleading. I'm about brain-dead right now, so I figured I'd ask for some input to gather some suggestions as to what I should not only put there, but how big should this image be via dimension size?
My New XenForo Site