It might be time to charge, say, $12 per year for membership and still ask for donations to cover the rest.
Maybe have a basic 'free' service (although besides Freepmail, I'm not sure what could be segregated that way). Its probably come to the point that FR has to make a decision about its finances, as sad as that might be. You can run ads (expect that would be hard), charge membership, curtail postings sizes and such (sorry JohnHuang2).
Something does need to be done.
I would keep it free to browse. It has incredible educational value in that respect. Also allows conservatives of modest means with a venue for ideological ammunition.
Instead, I would propose a minimum $12.00 annual fee for posting privileges. Not too burdensome, but would keep out some of the riff raff.
Jim...... We love you here and will continue to support you and this website, if you dont believe me, start a fund raising thread and you will see :-)