If you became involved in philately before the advent of the internet (and I guess that's most of us), the reinvention of our hobby is comparable to the change from gas-lamps to electricity.
The accessibility of information, the ability to view and purchase millions of stamps without leaving your home and the development of online "stamp clubs" (better known as forums), has lead to a sea-change in how we enjoy our hobby.
Forums are a subject dear to my heart. Having never been a member of a stamp club, apart from a couple of visits to a suburban club in Melbourne when I was a young teenager, I was delighted to "meet" so many like-minded people when I joined my first forum in 2007.
Like most things in life, I spread myself thinly for a while, and joined more online communities than my time could deal with, meaning I became overwhelmed with information that actually stopped me from my collecting!