Our world and our societies are changing at a rapid pace, and apart from economical and environmental considerations, the way in which we handle information (personal or public) is the most significant driving force of those changes. Social media have changed the online landscape and experience entirely.
In a very policital sense of the word, access to and distribution of information has become key - in fact, it always was throughout human history, as we learn from ancient texts and artifacts; but it has never been so easy to gather, use, misuse and manipulate information, especially about people.
The WWW is an open place where you can put pratically all kinds of information. The sharing of personal, even private information has become common and widespreads very quickly. Secrets are considered to be something to share, not to keep. Why this should be the case and if it is sensible (or even reasonable) is a completely different question - but a lot of people simply don't bother. I still do.
I'm also an outspoken advocat of Free Software and have taken part in the development of a small GNU/Linux distribution, Debris Linux (now dead).
Zoo; though I've taken to using portable computers exclusively in the last couple of years, which resulted in abandoning most of the old stuff.