  Motivated by the recent work about a new physical interpretation of
quasinormal modes by Maggiore, we investigate the quantization of near-extremal
Schwarzschild-de Sitter black holes in the four dimensional spacetime.
Following Kunstatter's method, we derive the area and entropy spectrum of
near-extremal Schwarzschild-de Sitter black holes which differs from Setare's
result. Furthermore, we find that the derived a universal area spectrum is
$2\pi n$ which is equally spaced.
