Twitter to tap people without Twitter accounts for money

However, many advertisers think Twitter does not have enough registered users for this to matter

Twitter will start showing ads to people who visit Twitter every month but who don't necessarily have active user accounts, the company has announced.

The number of such "logged out" users is somewhere around 500 million.

The change means that if you click on a tweet that appears in a Google search, for instance, you may see ads on that tweet page or on the tweet creator's profile, re/code reported.

Many advertisers think Twitter does not have enough registered users -- especially compared to Facebook -- to matter.

But the company has argued for years now that its audience is much bigger than the 320 million people who log in each month, and it has been telling Wall Street that it can make money off people without Twitter accounts; and is now putting that into action.