Hey Crowspeaker!
You got me wrong, or I didn’t explain very well. I don’t want to hide posts on a per-category-basis (I already knew how that works ;-), but on a per-post-basis. That said, the category is no longer important for this. I want to hide post “a” from category “b”, but not post “c” from the same category. Go it? And that only on the front page. Post “a” should never the less be visible when browsing the archives of category “b”.
Any ideas how this could be accomplished would be very welcome. Thx.