[Linda Buquet]

I don't know Yahoo well, but 50 seems low. That may be 50 per campaign. You should break your KW up into smaller campaigns anyway. For instance all the t-shirt KW in one campaign. All the tshirt campaigns in another.

Some like Adwords better, some like Yahoo. I think in general more prefer Adwords but most serious marketers use both.

All that said, are you sure you are ready to do PPC? It's an easy way to lose lots of money if you don't know everything about how to do it. Have you studied it? Do you know how to write ads and have a good landing page? Have you taken any classes or studied the online documentation from Yahoo???

We have some good resources in the stickies here in the PPC forum that may be helpful.