Are you contributing to this billion-dollar industry ... and is it really doing you any good?

Well, a little goodling didn't turn up sufficient answers. Anybody have a good appreciation of the difference. I've always though joint compoint was harder, though more difficult to sand down ...

Dear James: I have divided a large room to create an office, so I now have to tape the drywall joints. What are some taping tips so the joint locations won’t stand out? — Scarlett L. Dear Scarlett: ...