1. Google: A play on the word "googol", a mathematical term representing the number 1 followed by 100 zeros.

2. Yahoo: Derived from "Yet Another Hierarchical Officious Oracle".

3. Twitter: Inspired by the sound made by birds when they chirp.

4. Facebook: Coined after "The Facebook", the unofficial student directory for Harvard University.

5. Wikipedia: A combination of "wiki" (collaborative editing) and "encyclopedia".

6. YouTube: A blend of "you" and "tube" (referring to the "broadcast yourself" concept).

7. Snapchat: A portmanteau of "snap" (a photo) and "chat" (instant messaging).