There may also be Interest Levy on the tax underpayment resulting from the interest expense disallowance made by the tax authorities under the thin capitalization rules.
If you divide Facebook's market capitalization by its number of users - more than 2.2 billion - you'd find that each user is worth about $175 bucks to investors.
The result was the United States Steel Corporation, and in 1901, it was awarded a market capitalization of $1.4 billion dollars, making it the world's first billion-dollar company.
Or the e-mail may have other qualities which mark it out to be spam in all likelihood, such as large blue or red font, lack of return address, too much capitalization and a whole list of other considerations.