An investor who received an email from SharesPost tells me that 165,000 Facebook shares were sold at auction for $25 a share. This is a tiny sliver of Facebook's total shares outstanding (the total exceeds 2 billion shares now, after a reported 5-for-1 share split on Oct. 1), so using the $25 share price to a new value on Face book is not a good representation of the company's value. Facebook was most recently valued as being worth $35 billion after venture investor Accel Partners sold part of its stake in November, according to TechCrunch.