Ever Grande City introduced this a while back, and it's good. Given we just moved to our new server I'm sure it won't be too bad, but maybe have the option to turn the notifications on or off like the ones you get when your posts are liked.
Uhhh just gonna put this out there, but there's already tons of add ons for this. It doesn't have to be custom built, soooo.
This is what Audy said in the older thread:
Originally Posted by Ausaudriel
This is on my list. I'm going to rewrite some of the code that handles everyday stuff like sessions and fetching posts to make them more efficient (because vBulletin does some really stupid things). Once that's done it'll be more reasonable to start adding features like this.
Also, we aren't going to install the plugin by DBTech because it puts a really ugly obnoxious footer copyright link even if you pay for the pro version. I'd rather code the relevant parts of it myself and not have the copyright.