^ Enick, where the hell did you learn to reuse your wax? Its like re-using your old stinky bong water, you dont do it. The reason you scrape your skis is to get the best prepared surface to ski on, and also it can pull out a lot of crap from the base. If you look at what comes off some skis that havent been waxed for a while, you will see the wax is discoloured, where on skis that are waxed regularly, the wax is clean. Re-using this dirty wax just pushes all the crap back into your base.
To thos who dont scrape, you dont have to, but it usually slows you down a lot. Thats because you have to rub all that wax off until you get down to the 'fast' layer, which is where you start off at if you scrape.
Hope that makes sense, not sure if it does.
Oh, I worked in a ski shop, I waxed my skis every two days they were used, if not every day. But I wasnt paying for it then, so probably less if I was.