I have a pr0 page at the top of a rather popular search term and that one page is getting more traffic than a lot of pr3 pages I've had in the past.
Well lets see. My site ranks for a keyword with around 200K searches 1. PR7 2. PR4 (my site) 3. PR4 4. PR4 5. PR4 6. PR0 (prob penalized) 7. PR6 (Joomla) 8. PR6 (wikipedia) 9. PR4 10. PR4 Not bad