BLOOMBERG - Feb 1 - Facebook filed to raise $5 billion in the largest Internet IPO on record. Facebook is considering a valuation of $75 billion to $100 billion. A $100 billion market capitalization would value Facebook at 26.9 times trailing 12-month sales, more than double Google’s valuation when the search-engine operator went public in 2004. Zuckerberg is the company’s top holder with 28.4% of the shares, the filing shows. He also has proxy agreements with fellow stockholders that potentially give him voting control over more than half the shares.