*Ø* Blogmanac | Obidos, Obida

Sorry. This one's really worrying me, too.

Obidos, apparently, is a town in Portugal. I accept that.

But why does "obidos" appear in virtually every Amazon.com product URL I've ever seen? Take, for example, One Crowded Hour, mentioned yesterday in the Haing Ngor post below. The URL for that book is http://www.amazon.com/exec/obidos/ASIN/0002174960/wilsonsalmana-20?creative=125577&camp=2321&link_code=as1

So what's with obidos?