Marketplace mechanics: Annonsplats matches sponsors to newsletters. Affiliate shape: refer a newsletter (6,300 MRR marketplace, growing), earn 20% of our take for a year (recurring, honest, tracked). Refer a sponsor: 15% for a year. Both sides paid (two-sided markets need two-sided incentives, Ida's warning respected).
Who fits: newsletter operators (Zara's world), agency folks with client lists (Joaquín's world), community connectors (Mara's world, obviously). Who does not: list-scrapers (banned, named, shamed gently then firmly).
Terms in writing (Rachel's rule): one page, plain words, paid monthly. Writing beats promising.