Based on the latest $200m in funding.
Twitter has raised $200 million of financing in a deal that values the microblogging company at $3.7 billion, less than a year after it began its first serious efforts to make money.
The funding, from Silicon Valley venture capital firm Kleiner Perkins Caufield & Byers and existing Twitter investors, underscores the high hopes that investors have for Internet social networking companies.
"It's a huge multiple. But the idea is that (Twitter's) scale can be monetized," said BGC Partners analyst Colin Gillis, who estimated that Twitter's annual revenue was currently under $100 million.
The money will help Twitter expand the company, Twitter said in a post on its corporate blog on Wednesday. The blog post did not elaborate and a spokesman declined to offer specifics.
http://news.yahoo.com/s/nm/20101216/ts_nm/us_twitter