Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on ...

The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook. (Mark Zuckerberg)

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Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.

Mark Zuckerberg Quotes: The main Facebook usage is so big. About 20 percent of the time people spend on their phone is on Facebook.