I'm not sure if this suggestion is acceptable to you but I think it's at least worth mentioning. Having so called “high end” adversitisng, such as The Deck (decknetwork.net) or Fusion Ads (fusionads.net/…. I add sites that use ads like these to my adblock whitelist. They are usually relevant and tasteful. A problem is that they are invite-only.

Flattr (flattr.com) micropayment system might be an option.

Readability (readability.com) is a bit like Flattr, except only for written text.

I really hope that you find a way to fund your ventures, both this forum and your main website are among my favorite sites on the web.