If you want some data to back you up when your middle-schooler tells you that "Everybody has a cellphone," Forbes.com has some. Citing Nielsen Mobile research, it reports that "46% of US tweens (ages 8 to 12) use cellphones, but only 26% own them" and about 20% are using parents' hand-me-down phones. The 20% who don't own them borrow them from Mom or Dad. "About 50% take their parents' phones more … [Read more...] about Tweens are into phones