Perhaps we went in blind originally, step by step holding onto every number thrown at us, pot luck!
Everyone has to tackle learning about importance of the keys unfortunately.
Perhaps using Facebook with an Email address to contact people with an ad-hoc temporary x3 month posting key, full instruction to site guide, as started by @nickyhavey. T
Thanks for links and interesting reading, lost in reading all the comments below and visiting to learn more about what the topic is about.