More Twitter investment and strategy (or lack thereof) details
In addition to Benchmark, Twitter is backed by Institutional Venture Partners, Union Square Ventures and Spark Capital. Bezos Expeditions, the personal investment vehicle for Amazon.com founder Jeff Bezos, also is an investor.
Figuring out a business model for Twitter or one that builds off the momentum of the service has become somewhat of a sport in the startup community. Silicon Alley Insider recently held a Twitter business plan competition. At the recent Seattle Startup Weekend, several of the proposals (TweetReporterts, TweetSum) were connected to the microblogging service.