Where to install Flash Player?

[Thomas George <lists@tomgeorge.info>]

I downloaded flash-player-ppapi_26.0.0.137-1_amd64.deb into /opt and 
used dpkg -i to install it.

Is this the best way to do it? dpkg -s flash-player-ppapi responds ok 
installed but dpkg -p flash-player-ppapi doesn't recognize it.