I LOVE fonts and anything chalkboard. I think they look awesome on blogs and whenever they pop up on my Pinterest feed. It's hard to find a great font that goes with a chalkboard background. I look for anything cursive or something that looks handwritten or artsy since it just looks better. I also try to add illustrations to give more depth to the chalkboard.
I'm relatively new at the whole graphic thing and using a chalkboard background is the easiest way for me to add a little something to a blog post without spending hours trying to figure out my Adobe Illustrator.