In all seriousness, $8B may sound like a bargain for one billion users + extra perks(like one of Internet's oldest brand). By comparison, what facebook spent $19.3B for WhatsApp, they weren't even reach one billion users! [1]
Granted, most of that market cap value is tied up in the 15% ownership of Alibaba (market cap of $188B / yahoo's piece is $28B)[2][3]
Makes for an interesting thought experience on what the actual value of core Yahoo! really is.
And yes, $6-8B doesn't sound bad for a company with 1B unique vistors, but then again last year Yahoo! lost $4.4B [4]
[1] https://www.google.com/finance?q=yahoo&ei=-o8jV7HsKoWMmAGQ1I...
[2] http://www.google.com/finance?cid=658890
[3] http://dealbook.nytimes.com/2015/01/27/how-yahoos-spinoff-of...
[4] http://www.google.com/finance?q=NASDAQ%3AYHOO&fstype=ii&ei=F...
While Yahoo has been stagnant, it makes money.