Goodbye: thanks for visiting.

Wait! - let me rephrase that - - a 'visit' is when you show up at my door and I make you a coffee or pour you a cold beer or a scotch, and coax the dog off the sofa so you can sit down.

A 'virtual visit', like this one, ought to have a different term, or spelling, to distinguish it from the real thing.  I'd propose the following:

vvisit
(with the first 'v' silent).

So once again:

Goodbye: thanks for vvisiting.
 

Send me a note if you want to - I usually write back.
 

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