Mall of America
What would most people like to get from a Mall of America web site?
A map of the mall.
Doesn't exist. Ok, so it does. But only Google can find it. There's a tiny link on this page that hints that a map exists. Click on it to get a PDF map.
There are no other mall maps on the web site. Buried away somewhere is a list of stores, each store links to an illegible map GIF for that store area alone.
This site wins the "world's worst" prize because I bet it cost real money. If it were a freebie hobby site it would only be lousy.