Speaking for myself again, it seems fitting for
a) a person seeking to get paid for service to use pay-for-service advertisers, and
b) the community to be shown openly in conjunction with the ad that a person is here in part to promote themselves and their a fee-based business on this, another person's free, ad-less site. This point I find is insightful and helpful to know openly.
Else, for anyone's consideration there are a Pali guidelines for teaching dharma
AN 5.159:
1. to teach step-by-step
2. to teach cause and effect
3. to teach with a mind of compassion
4. to teach not for the purpose of material gain
5. to teach without hurting self or others