Geni, the fast-growing Web site that allows people to create family trees, has raised $10 million second round of financing, led by Charles River Ventures. The Los Angeles company says the company company is valued, after the investment, at $100 million, a significant jump from the $10 million valuation of the company after it raised money in June. Some 100,000 users have input about 2 million people on the site. See our initial reference to this here.