  Recently Lucarelli {\it et al.} have reported\cite{lucarelli}
temperature-dependence of the in-plane optical reflectivity of
La$_{2-x}$Sr$_x$CuO$_4$ over a wide doping range, focusing on the infrared
peaks at 30 cm$^{-1}$ (for $x$=0.12), 250 cm$^{-1}$ and 510 cm$^{-1}$. They
interpreted the first peak (30 cm$^{-1}$) as a signature of charge stripe
ordering, while the latter two (250 cm$^{-1}$ and 510 cm$^{-1}$) are attributed
to the polaronic charge excitations. However, careful readers would notice that
the reported spectra are largely different from those so far measured on the
same system. As we illustrate below, all these peaks are caused by an
uncontrolled leakage of the c-axis reflectivity into the measured spectra.
