SpyTalk is a Substack publication covering national security topics, with an emphasis on U.S. intelligence operations, both foreign and domestic. In other words, spy stuff.

On December 18, the publication shared some interesting subscriber numbers:

Subscriptions more than doubled, from 4,840 in the last week of December 2021 to this week’s 10,474. Fully paid subscriptions . . . rose nearly 25 percent, from 510 to 636.

The publication charges $99 for a year or $9.95 for a month so that would translate to gross income of about $6,300 a month. Less than 1% of subscribers pay.