A mod would be the one to decide on a ruling but I think the numerous posts fall into #6, relevant but ubiquitous.
https://www.mobileread.com/forums/fa...ing_guidelines
5. Advertising and Promotion
Please post in our Flea Market section if you want to buy or sell a reading device (or other item relevant to mobile reading) for your personal use only.
If you have something to promote – e.g. a new book, a new reading device, or other item relevant to mobile reading, then you may announce it, and respond to questions, in the Self-Promotions forum. Please read and follow the additional
Promotion Posting Guidelines. Members who abuse these guidelines may be treated as spammers.
6. Spam
Spam is defined as unsolicited advertising: either unrelated to the content of our forum, or relevant but ubiquitous. Spammers will be banned.