First of all welcome to SpiderKerala. You can earn money from SpiderKerala by posting articles, forums, jobs etc. For more details look into Revenue opportunities in SpiderKerala.NET.
You can write anything about Kerala in this website. But it should be self written. Look for articles which bring you good traffic, and more visitors means more money. Also participate in Mega Resource Contest in SpiderKerala for getting prizes from SpiderKerala.
If you have more doubts ask in forums and we are happy to help you.
Forum Editor SPK