Hello!
People installing yacy, index websites and creating problems for websites in google.
Example: https://palaestra.us.com/yacy/HostBrowser.html?admin=false&path=https://pornsites.xxx/sites-with-naked-celebrities
As you see here is DOFOLLOW links on this publically available yacy page, which index google and penalize websites. It happen because DOFOLLOW link and yacy usually installed on new domains without any backlinks.
Please, change backlinks to parsed sites to NOFOLLOW!!!
Thanks!