Blogger David Berlind was browsing around in Technorati and found a strange error. He checked again, just to be sure, but it appeared that his Technorati error was causing a Yahoo! 404 Not Found message. He wonders if Yahoo! has acquired the leading blog search engine.

If the buzz is true, it will prove TechCrunch's Michael Arrington (and Red Herring's Liz Gannes, who quoted him) to be one heck of a prognosticator. Back in January, he asked, "When Will Yahoo! Acquire Technorati?" and noted that Technorati CEO Dave Sifry had declined to comment on the speculation.

"No Comment" has never been proof of anything, but strange errors may be at least evidence enough to start the rumor mills churning. Interestingly, both Technorati and Yahoo! are spending a lot of time this week talking video; Technorati struck a deal with Paramount to help create buzz about new movies, and Yahoo! previewed its new home page with (of all things) video right there front and center.

Yahoo! was solidly up in trading today, 53 cents, to $29.53, and has soared in after hours -- up over 4% since yesterday's close. Everybody loves a rumor.