Facebook Advertising

Targeting interests, age, and location.

Building apps and getting viral.

Managing fan pages.

facebook keywords
If your looking for a narrow result of people you might want to target specific keywords, brands, or celebrities.

I've ran multiple tests based on keywords, impressions, and target location.

Getting the users to your site by registering or collecting data is a goal in funneling users thru facebook ads.
facebook image ad
Depending on the user some text ads which are usually more specific and get a better CTR (Click Thru Rate).

Picture Ads are more appealing looking but in it can vary based on what you are marketing, or promoting.

Running a test comparing a picture ad against a text ad can convince many which campaign is better.

Testing between the multiple campaigns you have running can be confusing.

It's good to have tracking code on your website to compare against the visitors referred from facebook.

Running different campaign week by week or month by month is good to get an accurate assessment of results.