Everybody and their brother links to external sites nowadays, especially the new wave of brand name reviewers. Not saying I like it, but it doesn't seem to be something the mods care about and if others can do it, you certainly can. I assume you'd want to wait until you're finished and post the final version here.
I think it's a location thing. If you post a new thread in the session/reviews you have to get approval for the post to appear. Apparently, they generally don't like links in those, because they reject the thread (I already got the rejection notice on it.)
It's no big deal. I wouldn't have tried if I had realized it going in. I put the disclaimer up on the off chance that it got through.
I'll post here when I update there. The images I'm using are hosted there, so it'd be kind of a pain to cross-post the full thing over here. But I thought some might be interested.