Cat Zakrzewski, Faiz Siddiqui, and Jeremy B. Merrill, reporting for The Washington Post:

In the first quarter, Apple was the top advertiser on Twitter, spending $48 million on ads on the social network, according to a document reviewed by The Washington Post that was compiled from internal Twitter data. Apple’s spending accounted for more than 4 percent of Twitter’s revenue that quarter.

Peanuts for Apple, and even as their heretofore biggest advertiser, only 4 percent for Twitter. But more important than its raw percentage of revenue for Twitter is the fact that Apple is a company that other companies follow. How many marketing departments are having meetings today along the lines of “If Apple pulled its ad spending on Twitter, why shouldn’t we?”