PCC is really spendy for the good keywords. I get my traffic through organic search. But I started with PPC, you can find cheap keywords if you do research.
Use this tool https://adwords.google.com/select/KeywordToolExternal

PPC is a great option if you do not have the time to do your own SEO, although the click ratio is 7:1 for organic results to PPC results, but hey its better than nothing.

Facebook has just brought out a PPC service that targets keyword and interest specific facebook user, it looks alright and is allot cheaper than Google.

PPC-

when doing PPC or Adwords the best thing to concentrate on is the text in your advertisement, Adwords works much like the organics as your add needs to be optimized to suit you URL and the search term, example- if your url talks about surfing and your add/search term is real estate than google is going to force you to pay allot more per click.

so in order to save money and get cheaper clicks, make sure that your add is related to your content and your search terms as much as possible and google will reward you.

when i first got my site, i started using ppc and made $15k for a $50 investment. i stopped using ppc since i wanted free leads, but i noticed now i probably should go back to ppc because you can get your ads on sites like myspace, mapquest, gmail, and other big sites. the content network in my opinion to takes up the slack where seo won't get you.

I just looked into the different pay per click features and right now, I don't think it's a viable option. Once i start getting a little more traffic I'll probably start considering adding some advertising to the site's pages.

Most people will find the content network to be a really big waste of money. Think about this for a minute:

You're a website owner and you put google ads on your site. You want people to click on them so you put them in areas where people will accidentally click, to earn you money of course.

Now since that's actually your add being posted, your money is sucked dry from a lot of people who had no intention of going to your site in the first place.

Just make sure you sign-up to analytics and measure everything! Search Google for tips on tracking cpc through analytics with dynamic identifiers and such.