I am new to exploring Pepperjam and received an email indicating that my "advertiser" application was contingent upon a $2,500 membership fee and an escrow deposit. I wasn't aware that they were charging fees to join? Is this something relatively recent or a matter of course? Do they charge a fee to signup as a publisher? Thanks!
You are not on Pepperjam. Sounds like you were rerouted into some sort of scam site or misclicked or something. Run away as fast as possible and run a malware check. Hope you didn't submit any info to them. PJN is just an affiliate network, which doesn't cost a thing to sign up and start affiliating for the multiple programs they have to offer.
Yeah, there are fee's to join the advertiser side of the network. On the publisher side (where you sign up and promote offers) there are no charges to join.