Good idea, and quit a bit depending on the size of the plant.
If you have a big flowering area and not enough veg stock to fill it, you can also tip your plants over. Plant tipping is sweet because it essentially makes a 4' tall plant 4' wide - after a couple weeks all the branches grow upwards and the lower growth gets the light it needs to bud. The less compact / bushy the plant, the less benefit to tipping it - works great on plants that are big but not overly bushy, and still have branches far down the stalk (lower branches die first, both from lack of light and either nit. def or nit. lockout)