By Breeanna Hare
CNNSocial networking by the numbers
Users with household income above $75,000
Facebook — 41.74 percent
MySpace — 32.38 percent
LinkedIn — 58.35 percent
Twitter — 43.34 percentUsers with household income under $50,000
Facebook — 28.42 percent
MySpace — 37.13 percent
LinkedIn — 17.34 percent
Twitter — 28.36 percent
Female users
Facebook — 56.33 percent
MySpace — 56.69 percent
LinkedIn — 48.11percent
Twitter — 53.59 percentUsers aged 18 to 24
Facebook — 10.27 percent
MySpace — 15.46 percent
LinkedIn — 3.99 percent
Twitter — 9.51percentUsers aged 35 to 49
Facebook — 31.54 percent
MySpace — 29.09 percent
LinkedIn — 43.64 percent
Twitter — 34.02 percentSource: The Nielsen Co.
via cnn.com