To make an accurate diagnosis for a more complicated medical problem, your doctor may use a(n) ____.?

Which of the following types of software made it cheaper and easier to start Web 2.0 companies?

a. Vaporware. b. Proprietary. c. Open source. d. None of the above.

Favorites, also called ____________________, are links to preferred websites.

Fill in the blank(s) with the appropriate word(s).