Adds Facebookâ??s response to lawsuit in 10th paragraph.

July 30 Bloomberg -- Facebook Inc. will probably put off its initial public offering until 2012, giving Chief Executive Officer Mark Zuckerberg more time to gain users and boost sales, three people familiar with the matter said.

Facebook would benefit from another year of growth absent the added scrutiny that comes with a public listing, instead of holding an IPO in 2011 as investors speculated, said the people, who asked not to be identified because Facebook doesnâ??t discuss share-sale plans. Still, Zuckerberg, who holds board control, could push for a stock sale at any time, they said.