Websites to download free fonts are plentiful, but 1001 FREE FONTS (which offers a selection of horror and sci-fi themed fonts) has a cool feature called "Custom Preview" that allows you to enter your own text (for instance, your blog title) to see what it looks like in each font before you download. If you have a screen-cap program or a snipping tool, you don't even have to download the font, just preview it, clip it, and save it to your harddrive. Below is a sampling of a few of the fonts under the 'Horror' category, but there are plenty of other categories of interest as well.
Feast of Flesh
Totally fonted up and living on the dub side.