lcd tv setup

I need to wall mount my 52 inch Sharp. For some reason the Sharp customer service says they do not recommend wall mounting anything larger than 42" due to "weight." I am still arguing with them about this. They will get back to me after consulting with their HQ. This I find very strange since...

i haven't got an opportunity to play around with my new lcd tv yet. plan to get my hands dirty tonight. wanted to know if there are any "generic" suggested best practice or steps that one could perform. any pitfalls or complete no-no's from the perspective of a new lcd tv? maybe there is...