What this hack does is extends vbulletins base functionality for $show['search_engine']. By defualt vbulletin only recognizes three spiders well this hack extends it to around 300 or so spiders.

I would say more about this and or provide screenshots if only that was possible for this. Basicly this is using a function i made to identify spiders and modified the vbulletin show variable for spiders.

This is a great seo mod becuase it helps filter out the useless junk that spiders dont care about.