Maybe we can come up with some ways to help AYP offset costs.
idea one:
You may not like this, but it's quite common; maybe on the home page only, put advertising banners. you could solicit companies like Yoga magazines, big chain asana schools, health food, yoga products like mats, etc. I think if they were restricted to certain pages people wouldn't mind. Myself I wouldn't care if they were on all pages. A lot of free sites have them and I just ignore them. It's very common to see banners that conflict with the philosophy of the site they are on, but are still in the same category because there are always "borderline" visitors who may not be into exactly what you are teaching. Along those lines would be a big chain yoga asana school that doesn't teach meditation at all.
Second idea:
You may set up a voluntary donation schedule to be a member of these forums. If you had a chart that said something like different member levels, say "basic member $10 per year", "generous gold member $100 per year" etc. These could be all voluntary, and say the service is free, but you have expenses and would appreciated help to disseminate costs and grow the spread of good information. I think if people could see such small amounts would help, that many of us would donate. You would send out yearly reminders, and of course people who know they can't afford it wouldn't donate.
Or, who else has other ideas?
Etherfish