I believe bying links on high
PR directories is ESSENTIAL for any serious website owner.
However, so is submitting to directories like mine.
By requiring reciprocal links:
1. my directory gets higher
PR
2. In turn YOUR site get higher
PR
3. The more people supplying reciprocal links the faster my directory becomes higher
PR which means YOUR site becomes higher
PR.
4. It means people who have submitted sites and provided reciprocal links are serious sites which gives the directory more credibility.
It is a win win situation.