I totally missed it, but it is well documented that Yahoo! Search was down. A thread at WebmasterWorld, created at 3:23 pm on June 13, 2005, with several confirmations from people all over the world, said it was down, with the following error.
We ran into a temporary problem while performing your search. Please try your search again.
I have seen this error once or twice in the past, but never heard of it over such a long time period.
Funny response in that thread by caveman;
I think this is only happening to people who Y has identified as spammers. Y knows who you are, dudes.