Evan Williams / Twitter Blog:
The Evolving Ecosystem  —  Just over four months ago, at Chirp, our Twitter developer conference, I talked about how “Twitter is too hard” and what we're doing to address that.  —  One major area of difficulty I highlighted was getting Twitter on your phone.

Miguel Helft / Bits:
Apple-Facebook Friction Erupts Over Ping  —  If it is true that the enemy of your enemy is your friend, then Apple and Facebook ought to be friends.  Their common enemy, of course, is Google.  —  But Apple's entry into social networking with the iTunes music social network Ping on Wednesday, has made them frenemies.

Nick O'Neill / All Facebook:
HUGE: Facebook Testing New “Subscribe To” User Feature  —  Facebook is in the process of testing a new feature which lets you subscribe to all the actions of a specific user.  In other words, you can receive notifications anytime a specific user takes an action on Facebook.

Peter Kafka / MediaMemo:
Ping Averts Its Gaze: Apple's New Social Network Doesn't Really Want to Know Much About You  —  Steve Jobs says Ping is supposed to be a “social music discovery” service: You share your musical taste with friends and vice versa.  But if you really want to share, you're going to find it harder than you think.

Peter Parkes / The Big Blog:
Make group video calls with up to 10 people with the new beta version of Skype for Windows  —  Today we've released an update to Skype for Windows.  The second beta of Skype 5.0 brings a number of changes both outside and in - most importantly, you can now make group video calls with up to 10 people.