How can I rollerblade with more comfort?

I would like to start rollerblading again for fun and fitness, but whenever I do this on the streets, I feel every little bump, divot, sidewalk crack, what have you. Is there a method that doesn’t cost very much that will dampen the vibrations through the boot and make this a more comfortable and fun activity for me?

I can’t take the train to Central Park every day, or else I certainly would.