The facts so clearly speak for themselves it's not even funny.
* Virtually no one has actually experienced and burn in here in the past 2 years or more.
* The few instances have been extreme cases and it's not clear anyone suffered irreparable damage.
* The brightness-decline curves for all plasmas are logarithmic, so it's actually far more likely burn in would occur earlier rather than later.
If someone has a serious screw-up where they do burn something in over a weekend or something, they can undo the damage by inverting the burned-in screen, either via the plasma, or with the help of a computer.
The incontrivertible fact is that the "problem" is just not that common. The corollary is that "solutions" to the problem are not really all the valuable or important.
There is no difference in HDMI cables. If you can see the picture without visible dropouts or sparklies, the cable is working at 100%. No other cable will display a better version of that picture. You're simply wrong if you think there is a better digital cable than one that is already working.