I have PR 5 propeller.com Profile and my rss feeds page at propeller.com is pr3, what you say about that.
Yes, times have certainly changed and real webmasters don't care about PR's anymore simply because their tired of playing Google's stupid slap me game. So now Google can slap their own selves. I had PR's 5 and 7 and now it went to 2 and 3's ... forget it. not worth my time anymore.
Many months ago, people would be wow and congratulating you. Having a pr5 profile is good, but nowadays Google has thrown the pr wagon all over the place changing pr's here and there, people don't care any more and seem to be working harder on getting visitors rather than trying to please the search engine. Pr5 is still cool though.
Most of the profile have nofollow link, you can't really pass out pagerank juice. I think this is the same with propeller.