[Elenna]

I've been looking for something like this for a long while, but would prefer it use custom tags, not Quote tags.

i.e. [page]Elenna[/page] would send a PM and/or email (recipent's option) letting them know that someone is trying to get ahold of them. Or, if people end up using nicknames, [page=Elenna]Ele[/page]

Shovel has been trying to work on that request in this thread, but so far nothing has come of it:
https://vborg.vbsupport.ru/showthread.php?t=171589

A (custom built) site I frequent uses something like this. People are able to put other people's "items" in their favorites, and also comment on them. The creator gets a private message notifying them that someone has put something in their favorites, or commented on it, etc. This also works in their posts, by writing something like [name of item](pattern) or [name of person](person).