On Thu, 28 Oct 2004, Clive D. W. Feather wrote:

Getting on the tube at Tottenham Court Road just now, I noticed that one
of the little advertisement posters had a small sticker on it, as is
sometimes done by protesters of various kinds.

Except that this one said something like:

Using prepay on your Oyster? Always remember to touch in and out
by putting the card flat against the reader.

Huh? Who would do this unofficially?

Some sort of underground organisation?

Sorry.

More seriously, i think it probably is a TfL metasubvertisment. A cousin
of viral marketing, i suppose.

tom

--
see im down wid yo sci fi crew