I dis-like commercial categories especially those of specific chains. I try to get them, both for numbers and to fill out the grid. However, I believe most anything that can be found doing a simple search on a GPS doesn't need a waymark. Waymarking is for finding those things that aren't pre-loaded into your GPS. The categories like Diners, Drive-ins, & Dives or 1000 Places to See Before You Die that are commercial places but are special because of a show or something are an exception.
But, that's just IMHO (or 1.5 cents worth).
Fatcat