Google Works! Now what?

I’ve managed to build a successful PPC campaign via Google Adwords that has seen positive profits for 4 months now.
I want to take this campaign to the next level and start using some other PPC places to multiply these results.
My question is, where do I go from here? Do I use Yahoo PPC? Should I try smaller company like 7search?
For what it matters, my campaign is based around the web hosting industry.
Thanks and I value your insights!

See original post by noodle24