The versions of 2K I have do not add the instant messenger, that is why it is not on the list.
The list is really intended to get people looking at the, more often than not, many things that should not be running by default.
Hmm,..non of the ones I listed should have turned off dial-up, unless MS has made more changes to the later versions of 2K (very possible). I will check that further.
"Not recommended" means, in the context of the data, to turn it off if possible.