There have always been people who have turned their hobbies into work - but thanks to the internet, there are more opportunities to do so now than ever before.
From beer to embroidery and makeup to mechanics, video bloggers - or 'vloggers' - are broadcasting their knowledge to millions of eager consumers all over the world.
Simon Martin is a carpenter by trade, but in his free time he is a beer vlogger who films videos from his kitchen and posts them online.
Millions of people care what he has to say about ale - so much so that he's planning to do it full-time.
Former council worker Nicola James used online videos to learn how to embroider - and ended up making a whole new career for herself.
She bought a sewing machine with no idea how to use it and spent weeks teaching herself the skill by watching YouTube tutorials.
She now has her own business in Cardiff.
Experts say Simon and Nicola's stories could become more commonplace.
Since its launch 12 years ago, YouTube has become the third most visited website on the internet, with millions of videos uploaded every day.
Watch the full report by Rob Osborne below: