The instance where someone is following you on
Twitter but never tweets, replies or enters into any conversation with anyone. Therefore they are
Tweet Dogging - watching but not taking part = Twogging!
Therefore the Twogger is Twogging.
Think of it as
Cyber Dogging.
A boss who decides to follow all his employees Twitter accounts but not posting is taking part in Tweet Dogging (Twogging) therefore his is a Twogger.