It is the hugely popular blogging website which is free for consumers but carries little advertising and is reputed to be losing money. So it must be worth... $10 billion.
That was the price tag placed on Twitter today as reports from the US claimed the social networking site has held "low-level talks" about a sale to either Google or Facebook.
The $10 billion (£6.23 billion) valuation will only add to the sense of a growing internet bubble which has seen Facebook itself valued at an astonishing $50 billion.
Twitter, with 175 registered million users, generated just $45 million in revenues last year, but was reportely loss-making after investing in new staff and technology.
The Wall Street Journal estimates Twitter's revenue this year at between $100 million and $110 million.
Twitter declined to comment.
Investors and established firms have demonstrated a huge appetite for internet companies in recent weeks, driving up valuations.
AOL bought the US news comment website Huffington Post on Sunday for £196 million while Amazon paid £200 million for British online DVD rental firm Amazon last month.
