QUOTE(bobo.cx @ Jun 13 2012, 07:15 AM)
I have a facebook fanpage with 50,000 fans. Please suggest me monetization ideas. The fan page is about Mathematics.
You can join an affiliate program and try to get sales or referrals from your fanpage. You could join a service that pays for clicks and post some links for your fans to click. You can promote your own website or service. There are many things you can do online with advertising. I have several sites that pay me regularly that I promote with online advertising. Facebook fanpages can serve the same role. As long as you can get some traffic to any link, eventually you will get referrals and sales depending on the amount of traffic you are getting. Best of luck with that fan page. PM me if you would like any suggestions. Take care and happy posting.