Using search seems to log you out. This makes it difficult to determine whether the unbelievably poor search results (see below) are due to not being logged in, or that search is broken.
Clicking "Log in" takes you to another page having nothing to do with the search you just executed, and then the whole cycle starts again.
"what socks" = 3 results
"which socks" = 1 result
"best socks" = 4 results