Re: External Blogs
With this plugin, the tricky bit is to make the external blogs as integrated as possible with the internal ones as, from the member’s point of view, it shouldn’t matter where their blog is. The admin part of this plugin is pretty straightforward and simple to make but then the proverbial can of worms opens…
It affects the blog directory, activity (obviously, the activity feed won’t contain activity from external blogs unless there is some background process running periodically and checking for external blog activity and adding it to the member feeds). Also, if you have a site-wide latest posts page, how do you aggregate the two different sources… etc.
So, the upshot is, that even if there is an external blogs plugin for the profile, there is quite a bit of work in the integration 
and that is really a case by case scenario…
