Here is a summary of what I learnt about Blackhat and Whitehat SEOs from Daniel Somers of SEOmers (seomers.co.uk) at the Suffolk Internet Marketing Specialists event organised by Sam Parnell and Max Shelley (Measure Brilliance) on 15 December 2015.
Whitehat: the proper way
Blackhat: the cheating, exploiting, hacking way