Um, how? Nobody would be posting links to anything whatsoever, as is already the policy. We'd just be writing down "such and such group has released such and such chapter of such and such manga". That would be it. And by "we" I mean regular users who both know and care about such things, which doesn't sound like a lot of people. People who want to report their own releases can go through the normal channels instead.
Lots of individual scanlators or person who translate things for fun usually don't want to announce their release for a reason. They just want to share it with friends or people they know.
Some are translating and posting it personally to learn the language and to ask feedback from friends. It's not meant for public release like this site.
If you start announcing the release it will just create a problem for them.
Even by writing down on a thread, lots of people will then realize this group or person exist
More and more people will know about them and surely they will search their releases with google.
Believe me, i deal with this kind of thing before. It's just bad. Real bad.
Someone reported my work without my knowledge. Lots of visitors came to my personal site. After that my works can be found everywhere. I have to stop translating a certain series just because of that.
That's not the worse of it. Since i provide text translations there too, someone just steal it and use it for their scans release.
Please don't create any more trouble for a fan community that just want to translate things for fun.