Not my best work, but how about:
STOPPING BY THE BOARDS ON A SUMMER EVENING
with apologies to Frost, and Lehrer, too
Whose boards these are I think I know.
Their owner is on vacation, though;
He will not see me stopping here
To watch his forum fill up with spam.
Reg’lar posters must think it queer
To see such a message here
Between the error messages and frozen accounts
Meta is the board least-read, my dear.
A perfect home, though, it seems to think;
To settle here is no mistake.
The only other sound's the sweep
Of moderators helping the occasional flake-
-ey ENworld account. Remember:
Spam has many unfulfilled promises to make,
And many posts to go before it sleeps,
And many posts to go before it sleeps.