[saurik]

All the other replies to your comment are "this is a permanent solution to the problem"; but I think to truly answer the spirit of your question, the correct answer is "yahoo.com": I mean... can you imagine Yahoo! ever getting around to adding SSL to their website? ;P

[enigmango]

I just tried http://yahoo.com and it gave me a 301 redirect to https://www.yahoo.com. (Same with http://www.yahoo.com).