  I demonstrate that radio observations in the literature to date of
optically-selected quasars are largely inadequate to reveal the full extent of
their jet-activity. I discuss a recent example of an optically-powerful quasar,
which is radio-quiet according to all the standard classifications, which
Blundell & Rawlings discovered to have a >100 kpc jet, and show that other than
being the first FRI quasar to be identified, there is no reason to presume it
is exceptional. I also discuss a possible new probe of accounting for the
interactions of radio sources with their environments. This tool could help to
avoid over-estimating magnetic fields strengths within cluster gas. I briefly
describe recent analyses by Rudnick & Blundell which confront claims in the
literature of cluster gas B-fields > 10 micro-G.
