Using the macros on ZMUD and then forgetting what you've done. This means using some interesting sequence you intended to try out with a young lady from Ealing when you're actually talking to the old man from Kent.
Talking 'out loud' when you intended to address one person.
The most serious mistake I have ever made is forgetting
that there are real people out there who can be hurt.
To do something the command may be .emote or emote.
(After a while you can try out semote, and pemote if they are available)
To do something to a particular person it is
usually .remote (person) or remote (person) or < (person).
Try to find out something about them first (like
which sex they are or purport to be). The command for this is .examine
or examine or x
To get help either help or .help
You can also ask someone who knows more than
you do, this will be virtually anybody to begin with...
If the people on the talker are unresponsive
to newbies try another talker because there is usually someone who can
help you.