Plasma Overuse?

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Hello all,

I recently purchased a 50" Panasonic plasma, primarily for watching movies and sports on the weekends- I really don't watch too much TV day-to-day. Trouble is my new roommates are douche bags and don't have lives. Consequently, my TV has been used much more frequently then I had anticipated. I'd say 6 hours a day during the week and 10-12 hours a day on weekends.

Should I be concerned about overuse or am I being completely anal? If I should be worried about overuse, what are some good rules of thumb to prevent it? Are there any telltale signs of overuse. Thanks in advance.