This is becoming the most popular method of making money online now. Membersites that pay you monthly is where the money is at. Why work your butt off to write a book that's only going to pay you once, when you can write content that will pay you month after month.
The best place to learn about membersites is Paidmembersites.com run by Terry Dean and a few other marketing experts.
Source - http://www.streetdirectory.com/travel_guide/2483/computers_and_the_internet/5_ways_to_make_money_online_today.html
This is a great way to make money today!
