No, not at all, unless you buy a shoddy board. Give the skateboard manufacturers some credit. They know that skaters are going to grind these things down rails and ledges, they know you are going to try huge jumps, and they know you are going to hurl the thing away in frustration time and time again. So they make skateboards with 7/8 layers of pressed Canadian maple wood, which ensures that even if you shred hard, it's very rare that your board will snap. So feel free to boardslide to your heart's content.