In a roundabout way ... Mark Zuckerberg saved Zsa Zsa Gabor and hubby Prince Frederic von Anhalt from foreclosure.
Zsa Zsa and von A-hole were slated to lose their mansion at month's end because of a $700,000 mortgage that was in default.
Von A-hole tells us ... in a last-ditch effort to save the homestead, he jumped on Facebook and begged his fans for help. Shockingly, his prayers were answered. Even more shocking, he has fans.
Someone stepped up and helped von A-hole secure a $1.5 million personal loan -- which he used to pay off the mortgage.
But there's a catch -- Von A-hole has ONE YEAR to pay back the loan ... a loan which we understand is secured by the house.