ADOTAS – Earlier today, Gawker leaked what it claimed to be Facebook’s financial figures as of September 2011, citing an email from “a well-placed mole.” (Incidentally, is there even such a thing as a poorly-placed mole? Wouldn’t that just be some random person who talks too much?) Some key points: $5.6 billion in assets, $3.5 billion in cash or cash equivalents, $4.5 billion in shareholder equity, $2.5 billion in revenue for the year, $714 million in net income, no debt. And an IPO is “widely expected” for 2012. This all comes from an anonymous source quoted by an inherently gossipy publication, so we’ll see about its ultimate veracity. But while we’re tossing around reported Facebook rumors, here’s one of more personal interest to our readers: AllFacebook reports the network might be considering charging advertisers per engagement, rather than per click. Facebook’s conducting a test in which users can retrieve coupons via their email by clicking on premium ad units on the advertiser’s page. And reportedly, Facebook’s explanation of the program to advertisers contains the line, “You will be charged each time your ad is viewed.” So… did you see it?

There’s a column at iMedia Connection today called, bluntly, Why Publishers Should Stop Selling Remnant Inventory.” Eric Picard explains how “liquidating all inventory at ‘any price’ is a horrible idea, and has led to many unintended consequences, namely driving a perception of ‘unlimited’ inventory out to the market” — among other things. What do you think? Share your views in the comments section.

• AdExchanger has published an interview with Joanna O’Connell, who led the team of analysts that created the Forrester Wave 2011 report on demand-side platforms that just dropped yesterday. As there’s some murmuring about whether or not Forrester took the right approach in ranking the DSPs, it’s worth a read.

LinkedIn has rolled out a “polls” feature for LinkedIn Groups. The idea is that it’s a way of asking a question to a group of professionals in your network and having a discussion that’s as easy to participate in as clicking a button, but also has some degree of nuance. Anyone, not just a group manager, can create a poll, but moderators have the option of limiting poll creation to a much smaller segment if they’d like.

AddThis has a new infographic about this year’s social sharing trends. Indulge in a bit of premature nostalgia and check it out: