About
Who Sponsors It records which sponsors appear in newsletters' public issues, and which newsletters each sponsor appears in.
Where the data comes from
Every row on this site comes from public newsletter archives (beehiiv, Substack, Kit, Ghost). We read each new issue, note the sponsor placements in it, and record the newsletter, the issue, and the date. Nothing is inferred from media kits or ad-rate pages.
What it does not include
No contact information, no pricing, no audience figures. Just who ran an ad, where, and when.
Who runs it
Who Sponsors It is run by Pleasant Products LLC, 1500 North Grant Street, Suite N, Denver, CO 80203. Questions and corrections go to [email protected].