SEO Friendly Directory Script

I was looking for a SEO Friendly Directory Script other than PHP Link Directory and I found Site Sift Listings would be a great idea to use.

Features
- Categories
- Sub Categories
- Edit Listings
- Paypal and 2CheckOut payment system
- Featured Links
- Expiring System
- Sort listings
- Meta Tags
- Google Sitemap
- Check links for broken links
- Domain banning

What do you think? Any suggestions?