It was down 1.8% at the end of regular trading today (before the earnings call). It is down an additional 6.7% currently after bouncing around a bit--the conference call is not going well!
You can see a chart of the after hours action by hitting "e" on the Google Finance chart (you may have to click on the chart first):
This is pretty common with tech stocks. People buy on rumors and sell on news, even if the news is good. I don't get it but that seems to be the pattern.
Example: say BigTechCo will be releasing earnings reports a week from now. BigTechCo stock slowly rises in anticipation of a good report. A week later, BigTechCo announces that every possible metric is better than ever, and the outlook is even better for the next quarter/year/whatever! Analysts are pleasantly surprised, and everyone is 100% on board in believing the numbers and the rosy outlook. Within 48 hours, the stock tanks as everyone furiously sells off. It happens all the time and makes zero sense to me. I'm sure there are reasons I'm not aware of, but I've got to think it's from some sort of irrational group behavior as well.
You only have profit when you sell above what you paid for a stock. So earnings reports and these stock surges are a great time for investors to cash out. This can spark a larger sell off. I'm sure someone with more investor insight can give a better explanation but this is what I suspect.
I guess investors are having the same feelings people are showing here. This don't look like a healthy company, imho. Facebook mobile ads looks like scam to me, in both ends. You pay money to interact with the people you expent money and work to bring.
Both of your comments here have been composed of relatively strong opinions with nothing to back them up. Care to contribute anything to the discussion other than your potential bias?