Need help in monetizing my website (28,000 members)

Hello,

I'm a software developer and for the last few years, I've been running a fantasy stock website for Pakistan (while I live in North America). I have about 28,000 registered users (and 9,000 Facebook likes). All this happened organically without me spending a dollar on promoting my website. This site is used by some of the business schools in that country as a course supplement.

At the time of sign-up, I ask 3 questions:

1. Are you Interested in Stock Trading. 16,800 users said yes.
2. Are you Interested in Insurance ? 12,400 said yes
3. Are you Interested in Immigration ? 11,800 said yes

These are some statistics:
80% Male
65% Age 20 to 30
25% Age 30 to 40

Here is a screenshot of the Google Analytics for the last 6 months or so:
https://www.dropbox.com/s/d4gass6ro2...49.13.png?dl=0

I have also setup a Google Adsense widget on the website which is doing fine and I'm not interested in lots of traffic and useless clicks.

What I'm interested in is in creating partnerships with stock brokers, insurance agents, and immigration consultants and refer them leads and make money doing so. Not sure how I am going to do that!

Last week (just to see if I can do some email campaigns), I created an email campaign 2 days back to send a 'We miss you' type of email to those users who signed-up this year but didn't sign-in for the last 3 months. So far, 20% opened those emails and 5% clicked on a link that would take them back to my website. I don't know how good or bad are these numbers. Any feedback would be appreciated!