BusinessWhen Zuckerberg Speaks, Facebook Investors YawnJust moments ago, Facebook unveiled a new video-sharing option for Instagram. It's the fourth big "product unveiling" the company's had this year, none of which has significantly moved the stock in either direction.By by Matthew LynleyBuzzFeed News ReporterPosted on June 20, 2013, 6:59 pmTwitterFacebookLink Facebook's Instagram presser started around 1 p.m. ET. It was already down a bit to begin with. In reality, the effect of these big "product announcements" has been a kind of mixed bag. nilay patel @reckless Someone should tell Kevin Systrom that adding video to Instagram does not merit the hushed tones of a preacher in the face of rapture. 05:23 PM - 20 Jun 2013 Reply Retweet Favorite nilay patel@recklessSomeone should tell Kevin Systrom that adding video to Instagram does not merit the hushed tones of a preacher in the face of rapture. Dave Pell @davepell Facebook and Instagram just gave you a new place to please not share short video clips. 05:23 PM - 20 Jun 2013 Reply Retweet Favorite Dave Pell@davepellFacebook and Instagram just gave you a new place to please not share short video clips. Gabe Rivera @gaberivera Systrom's law: the number of seconds in latte videos will 2.5X every 6 months. 05:21 PM - 20 Jun 2013 Reply Retweet Favorite Gabe Rivera@gaberiveraSystrom's law: the number of seconds in latte videos will 2.5X every 6 months. Seriously, Mark, what the heck?