for those saying typing indicators don't work, here it's what came to my mind.
They've been introduced in scripts revision 102 as mentioned in the release notes, so press insert+q fron within Skype and verify if you have this revision; if you have 86 or below, you need to download the scripts installer again in order to update them.
Typing announcement is disabled by default because Skype itself produces one so they can be duplicated if the JAWS setting is turned on. Typing sounder should work though.
Another thing: do you have another language different than english? If so, chances are typing indicators are language-dependent.