For the most part, I think Twitter’s new Retweet feature is really nice. Pretty much the best you can do trying to wrangle a feature like that after your users decided to just make it for themselves.
What’s been bothering me lately though are all the tooltips everywhere. Do they really have that little faith in their interface being self explanatory? This one is particularly silly, though. There’s a ton of sentences peppered with relative times, but this one had to go in a tooltip?
(And I’ll just ignore the whole “rotate 90° thing” for now)