  We show that gapless plasmons lead to a universal
$(\delta\nu(\epsilon)/\nu\propto |\epsilon|/E_F)$ correction to the tunneling
density of states of a clean two dimensional Coulomb interacting electron gas.
We also discuss a counterpart of this effect in the "composite fermion metal"
which forms in the presence of a quantizing perpendicular magnetic field
corresponding to the half-filled Landau level. We argue that the latter
phenomenon might be relevant for deviations from a simple scaling observed by
A.Chang et al in the tunneling $I-V$ characteristics of Quantum Hall liquids.
