|
Author Question: Click-through advertisements based on keyword searches are credited with reviving online ... (Read 18 times) |
Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.