The best (but not best smelling) money making idea ever

Here it is, plain and simple:
Collect dog poop and then burn methane from it to produce electricity

What you don't believe me? If people on a farm that have 2000 cows can produce $2000 of electricity per month, then I can produce $40 per month easy.

Given the number of dogs which pass by my house each day, a simple poop collector outside my house would easily collect enough dodo to make my meter move backwards.

Don't believe me?
Check out these links:

http://newanimalcontrol.org/wastetogas.shtml
http://www.ruralcostarica.com/biogas.html
http://www.builditsolar.com/Projects/BioFuel/biofuels.htm