There's an article on the main site about keeping weeds down that might be interesting, too.

http://www.stretcher.com/stories/07/07apr16c.cfm 

With spring well under way for most of us, thinking ahead a little might help this summer's lawn and garden chores be a little easier. I prefer the shovel method when it's possible, but boiling water would probably work better on a sidewalk or stone pathway.