BlackBerry-maker Research In Motion (RIM) yesterday unveiled its first attempt at a mobile Twitter application: Twitter for BlackBerry smartphones. The app’s currently only available to beta-testers, including yours truly–unless of course you seek it out via “unofficial” channels. RIM’s Twitter for BlackBerry Smartphones Application Yesterday, I posted an image-walkthrough of the app to... 

Yes, Twitter’s megacash infusion is real. CEO Evan Williams confirmed on the company blog Friday that Twitter has raised a new round of investment from Insight Venture Partners, T. Rowe Price, and existing investors Institutional Venture Partners, Spark Capital, and Benchmark Capital. Williams says it’s “a significant round.” He didn’t say just how close it was to the roughly $100 million... 

The development team at Twitter has released a mockup of its forthcoming “retweet API”–basically, the first formal way that Twitter has baked retweets, the copying and attribution of other Twitter users’ posts, into its own product. It displays the user avatars of members who have retweeted a given tweet below the original, “collapsing” them into a single space. Some background detail...