[dba-Tech] What is Twitter and Why Should I be Interested?

A whole slew of people are now sending me messages saying that they are
following me on Twitter. I don't know what Twitter is, or why people are
following me on Twitter, or why anyone would want to follow me on Twitter,
or why I would want to be on Twitter. But I have received approximately 100
messages saying that people are following me on Twitter. I admit that I am a
senior citizen but I have no idea what these people are following me for,
and no idea what Twitter is, nor any idea how to prevent these messages.
Apparently I am too old for this stuff. People I have never heard of are
tracking me on Twitter, and I don't even know what Twitter is. But I guess
that I am way out of the loop, because even Jay Leno makes reference to it.
A.