With the release of the 5.0 series there where included plugins for vb4 that automatically add navigation links, profile content and random ad block etc. That was all included.
You are not going to find alot of activity stream information out there. I know I said if
vb every documented there new activity stream that we could probally see a hack for that at some time in the future but its a new feature and there is no information on it from
vb and as a result you see very little vbulletin hacks for it.
The classifieds is displayed in the
very same manner as any other link on your site with about the same integration level as anything else your using. Thanks for actually posting a link. I am not partial to your style choice but I really do not see how the classifieds is any less integrated than any thing else you use.
I looked at your activity stream there are no hacks to that for any other app you use its a clean
vb activity stream.
I can look at the PM integration for the future thats not a big deal and the activity stream is on the radar but we are waiiting on documentation as are alot of developers on the net.