There are lots of ways to make money with PPC ads such as Google’s AdSense program.  You’ll find thousands of sites online with content targeting a specific set of keywords just to get a little money from the PPC ads on their pages.  Most of these sites are pure garbage, and the search engines are getting better at filtering them out of search results.  Add to that the fact that more people are using alternative methods for finding good content because sites like these show up in the search engine results.

So, what can you do to make extra money with PPC ads when the game seems to keep changing?
Obviously, the best way to make money with anything is to provide a quality product or service.  For website owners, that usually means providing high-quality information on a specific topic.  And by high-quality I mean fresh, original content that isn’t something you’ve purchased for a few bucks and republished.  But that doesn’t mean you have to spend hours at your keyboard writing content. 

You can let your visitors add to your content.
There are many ways to do this.

• Request articles. Some writers will provide content just to get their name published. 
• Create forums to discuss topics that interest your visitors.  
• Allow visitors to place ads for buying and selling products related to a specific niche.  Just make sure the ad script is SEO-friendly or you won’t benefit from the ad content. 
• Create a dating site just for people interested in a specific topic.  There are free and inexpensive scripts for this as well.
• Add cartoons or jokes on your site and update them frequently.
• Add online gaming (not gambling) to your site along with quality content.  The games will keep visitors coming back, and the content can include ads that may be relevant to their interests.  Be careful with this one because competitive gaming is governed by law in many areas.  If the games are just for fun, you should be safe.

I’ve used a few of these methods to build sites, and they provide me with a constant source of income.  The key thing to keep in mind is that you must provide quality content or a valuable service to keep visitors interested.  If you intend to make money with PPC ads, you want your visitors to be just interested enough to come to the site.  Then you want them to click away to something that catches their eye in an ad.  If you’re providing good content, it’s more likely that they will be really interested in what your advertisers have to offer.  That will keep your ad payment rates higher, and it will also help to prevent advertisers from asking to have their ads removed from your site.

The toughest part of building a community site is attracting those first visitors, so expect a bit of work up-front to get things rolling.  No one likes to be the first person to comment on a forum, so you may need to help your visitors feel more comfortable by “seeding” your forum or ad site with a few comments of your own - or from friends.   I don’t advocate being deceptive, but you really have to be creative in order to get a conversation started among your visitors.  When I started my first classified ads site, I simply included an ad that said “Place your ad here to sell your…  It just might get results. After all, you’re reading this aren’t you?”  That’s all it took to get things rolling.  Within a few weeks, I had dozens of ads - all getting indexed by search engines.