There are millions of fonts available online. Not all of them are suitable for headlines in blogs, magazines or other serious media. You can find them in places like Google font directory, Typekit, Font spring and many, many others. Some will cost you but many others are yours for the downloading. What you will find is that the old adage you get what you pay for applies even to cool Fonts. The free ones are usually not the kind you can use in any serious text. With many of the free ones you will find that there is not really any instance that you would find them useful.
The general rule for a headline is that it should be offset from the body text. Many writers simply use a bolder face type in the headline. For example if you were to use a serif bold type for the headline you could use a sans-serif for the body text. The key to a great attention grabbing headline is to contrast it to the body text. Readability can be played with here because a headline generally has fewer than 100 characters, reader fatigue is not an issue. Here are just a few of the font websites that we find to be free and useful.
This one is called Geotica font and it is a free font.
Megaopolis is sans font with substantial weight. The letters are interesting and the script is both playful and serious without being under whelming. This is a font that can be used in a variety of contexts and it looks best in all caps.
Deja Web is a readable humanist sans that is just slightly more angular than FontFont’s Dax. We consider it one free font that shows incredibly high quality.
If you are one that is fond of using larger type then this is an excellent font for you.
This is one of the best slab serif fonts with a heap of personality. It has great subtlety. It is one Type Together’s best work.