Re: Images in wire
In the realm that anything is possible, yes.
But currently the activity feed strips out any html and anything it thinks is an image. Mostly to avoid mucking up the feed with huge images, etc…
The best answer I have for this for now, is that BP1.0 is the jumping off point without too many bells and whistles. It shows how to intertwine WordPress MU installs together to become a basic social networking structure. In theory you could certainly add all sorts of activity feed filters and ajax and images and fancy things to it, but there is no on/off option for images.