Hello, everyone. I'm new to PPC and have gotten a lot of useful info from posts here. Thanks!

I'd like some input on my fledgling campaign. Right now I've got a budget of about $350 pm (I'd actually like to keep it closer to 300 for now) and I'm using both Yahoo & Google. I'm wondering if I'd be better off sticking with just one (I'm thinking Google) with such a limited budget rather than spreding my money out over the two. Is this advisable?

I'm also wondering:

1.) how many different search terms should I bid on? I've heard 20 is a good number, but I'm wondering is more better? If I bid on search terms relevant to all of the areas in my market I'll have no trouble coming up with far more terms than 20, but I'm not sure if that's the best way to go.

2.) Should I include Google's Content Network & Yahoo's Content Match or do these tend to deliver badly targeted trafic?

Thanks for your input.