H1B RN Visas - Are They For Real?

H1B visas for RNs are back in the headlines as EB3 visa retrogression drags on. Is it a good idea to apply for an H1B visa now or wait for EB3 priority dates to advance?  Which RNs are qualified and what other requirements have to be met? What questions do you need to ask of anyone offering H1B visas and much, much more.