Q. When using “Google” as a verb—Googled, Googling, etc.—should it be capitalized? Even if one is not referring necessarily to the use of the official Google website, but merely using “google” loosely as a synonym for checking something out?
A. Google is a brand name; at least in formal writing, you should always capitalize it—unless, for example, you are writing about a certain type of tricky bowling in a cricket match. See paragraph 8.152 in CMOS 16 for more details.