  I briefly review the X/UV absorber models and show that the observations of
NLS1s are generally consistent with the models. The covering factor of
absorbers in NLS1s is likely to be high and there is some evidence of
super-solar metallicities. I argue that NLS1s may be active galaxies in the
early stage of their evolution and as such, may be low luminosity, low redshift
analogues of the high redshift quasars. NLS1s may reside in rejuvenated
gas-rich galaxies. I also propose that the high Fe II emission in NLS1s may be
a direct consequence of their large accretion rate and so a collisional
ionization origin of FeII is favored.
