Marcel also has yet to find the other edited subject (not too difficult, indeed...)
Edited? Amateur

All I need to do is
dig up how to find threads with pairs of users, cross-reference them for
topics started by me, find a good post (that's still a requirement) and let the fun start

Quick&dirty:
comm -12 <(comm -12 <(wget -qO- https://loyce.club/archive/members/45/459836.html | grep '<FONT COLOR=gray>' | cut -d'=' -f4 | cut -d'.' -f1 | sort -u) <(wget -qO- https://loyce.club/archive/members/185/1852120.html | grep '<FONT COLOR=gray>' | cut -d'=' -f4 | cut -d'.' -f1 | sort -u) | sed s/^/'https:\/\/bitcointalk.org\/index.php?topic='/) <(wget -q --load-cookies /path/cookies.txt "https://bitcointalk.org/gettopics.php?user=459836" -O- | grep -a '</li><li>' | sed 's/<li>/\n/g' | grep -a bitcointalk | cut -d'"' -f2 | cut -d'.' -f-3 | sort)
Result:
Pick
a post, move the topic to change the title, Merit the post, change the title back, hope it worked
