Okay, I admit, I was being cheeky :) But there was a whole section of the query that I left out that looks like this: ref=sr_1_1?ie=UTF8&s=books&qid=12380820

Okay, I admit, I was being cheeky :) But there was a whole section of the query that I left out that looks like this: ref=sr_1_1?ie=UTF8&s=books&qid=1238082049&sr=1-1 This all looks like info they use for clickstream analysis, so nothing too critical. But I wish they had basic functionality on the page itself to generate a URL like you just gave. Maybe with some more info as well like tufte-envisio-XXXXXXXXXX.