I have seen this as well as I am an active blogger on many real estate portals which are proving to be a good support ground for many real estate professionals.
These websites keep you updated about the deals going on anywhere in the world as well as they give you opporunity to tell the other people about your deals.
Through this what you would get is contacts + many good deals if you have the right kind of aproach towards these things.
The only thing you gotto remember is that you should be really quick while networking on such websites as you get a lot of inquiries and you should get on to them quickly with the best deals you have get.
So this would surely prove helpful to develop a good strategy to increase your sales generated revenue.
Try it out as it really works..............