Not exactly, I've joined around 500 yahoo groups and 400 google groups and I post at individual groups by using iMacro and it brings around 300+ visitors daily; it's not dead completely, you need to join active groups and posting on every group is going to help. I've created four of my google groups as well and adding around 1000 people daily, once I get 50k users, I'll use them for further marketing my products. If you are serious and can pay, I got custom long term solution, the more you work, the more people you approach.