word choice - Is it acceptable to use "google" as a verb?

With the popularity and ubiquity of Google, it has become a verb to describe "searching for something online" and it appears in conversations and informal writing.

How can I know if it is acceptable to use "google" in more formal writing?

Answer

It is now an official verb (since 2006), added to the merriam-webster dictionary and the OED.
So I would say: yes.