i cant speak for bdsm library obviously and dont want to dominate this thread... might be a bit difficult for a sub lol ...but i do know from experience that advertising doesnt really generate any income, and most people dont want to pay for sites when there are so many for free even donations are pretty rare
and sometimes its the server who has technical problems which causes the site to go down.
yes its frustrating and as much so for admin as it is for members
it takes a lot of dedication,pride and love to run a site such as this.