Evan Williams:"People have long asked when we're going to build a RT button on twitter.com. While it would have been pretty trivial to do the way some clients have, the reason it's taken a while is because we wanted to do something a little more fundamental that we thought would add a lot more value
"After being restricted to just a handful of cities for the first several months of its existence, Foursquare is now in a period of rapid expansion around the globe. Fresh of its launch of 15 European cities a couple week ago, today the site has rolled out support for 50, yes 50, new cities."
John Battelle:"For starters, it's a rather subtle leapfrog of Facebook, which has recently mimicked Twitter with its status updates. Facebook is stuck (but there are upsides to this stuck-ness) in a personal framework. Twitter, by moving past the YOU, is declaring Facebook's imitation moot."
Kara Swisher:"To help make the frustrations less frustrating, there is a $50 million annual payment to Yahoo by Microsoft for three years, for unspecified “transition and implementation costs.”"
Mike Masnick:"Most of those sites worked hard to get to the top of Google for a very good reason: they understand the value of being easily findable. As such, they also recognize that it makes little sense to make themselves less findable at almost any price."