1: Facebook replaces personal email

Question: Google has it, Hoover has it (in the UK anyway), TiVo had it, lost it and has somewhat got it back. Xerox had it, but nobody really cares anymore. So what is it?

It's when a brand name becomes the verb associated with its use. So rather than searching, you Google, or TiVo when digital recording a television show. Arguably an even more powerful synonym is when a brand becomes a noun, such as Polaroid, for instant developed photographs, although that didn't end so well.

The newest one would seem to Facebook, although it has too meanings.

'I Facebooked you' could mean that you the person has added you as a Facebook friend or they sent you a private message though Facebook. The latter would seem to be of more interest as no-one has really owned this type of communication before. No brand ever became synonymous with email. To Hotmail or Gmail someone just never happened.

So the interesting and overlooked disruption of Facebook is its displacement of personal email as a communication tool. Completely permission based, no SP