Does anybody use this PPC strategy?

So I started my adwords account yesterday, and I have to say...

... The price per click for most good keywords seems fairly high. There are some keywords I'm interested in that I can get for about 50 cents, and I'm willing to pay up to 2 bucks a click for certain other keywords, but on the whole, the 5 bucks a click I'm seeing for some keywords is pretty prohibitive for me, at least at this point.

However, I've been thinking of a PPC cost minimization strategy that might let me get pretty decent traffic for cheap, and it's this:

Advertising on guru names or product names related to the niche, rather than the specific keywords that describe the niche itself.

Okay, so I'm sure somebody's thought of this before, but anyway, I still want to talk about it.

I have done some keyword research for internet marketing. As it turns out, to advertise on the term "internet marketing" itself is pretty expensive: roughly $5 per click.

However, you can advertise on THESE terms for way less:

sell information products: $1.30

make money online: $1.40

creating information products: $0.69

mmo: $0.44 (!!!)


And yet, I do notice that when I search these terms myself, I do not see as many ads as I do with other terms. So does that mean that I'm not going to be seen as much if I advertise on these terms?