A quick search turned up an explanation in
Mobhunter:
Mudflation:This ancient term gets used any time someone sees the game progress and doesn't like it.
Mudflation means little but has a built-in wrapper of negativity that lets us label progression like a package of spoiled meat.
Few describe exactly what they mean when they use the term and fewer can describe how to fix it.
The game gets larger. The high-end zones get higher. Level limits increase. Equipment grows in power. That isn't mudflation, that's progress.
Kind of the impression the word gave me even though I couldn't have explained the meaning to you.
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Over the last 15 months, we've traveled to every corner of the United States. I've now been in 57 states? I think one left to go.
Barack Obama
Laen - 105 Dru
Haam - 105 Sk
Laosha - 105 Shammy
Lutan - 105 Bard