The Possible Houserules Index has been updated to include links to the Recoil, Attribute Boost and Karma<->Nuyen houserules. Said update has been added to the Updates page.
I also added a slight note about Tablerules, since I included the specific houserule I use myself for Karma<->Nuyen. This kind of rule has been adjusted to my table and personal preferences specifically so while useful for inspiration, it should still be considered very carefully.
Finally, the first Black Hearts session announcement will publish this evening. I will configure these announcements to all happen exactly 1 week before the start of each session. These announcements will be in both Dutch and English.