Silicon Valley venture capital numbers continue their rapid ascent in 2011, leading many to buzz about a tech boom and some to murmur about another tech bubble. Venture capital in Silicon Valley rose in 2010, for the first time in three years, to $21.8 billion, from a 12-year low of $18.3 billion in 2009. Those figures increased by another $7 billion in the first quarter of 2011 -- a 76 percent increase over the first quarter of 2010.
Some major recent Silicon Valley VC deals include $200 million for Twitter in December 2010 and $27.5 million for Square, which allows both businesses and customers to accept credit-card payments on mobile devices.
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Author: Janean Chun