I've adapted an existing Userscript for Greasemonkey that prechecks and hides Notifications of removed Journals or submissions so it can precheck and optionally hide journals containing user definable keywords.

The keywords can be changed in the code, but that shoudn't be a problem even if you're not a programmer.

That way you could precheck and hide journals for e.g.
* Raffles
* commissions
* Streams
* Memes
* Holidays
* Con reports

The script only checks in journals, not in submissions.

Before I change adapt the script I wanted to make sure that there is some interest in it.
You can find the userscript here: https://userscripts.org/scripts/show/159458