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Can high ionization lines such as CIVλ1549 provide useful virial broadening estimators for computing the mass of the supermassive black holes that power the quasar phenomenon? The question has been dismissed by several workers as a rhetorical one because blue-shifted, non-virial emission associated with gas outflows is often prominent in CIVλ1549 line profiles. In this contribution, we first summarize the evidence suggesting that the FWHM of low-ionization lines like Hβ and MgIIλ2800 providedoi:10.3390/atoms5030033 fatcat:yhpysxz7knf2fhoxwbghbkco3i