The author's intent
A filter can target customer requests while excluding seller ads, advice to someone else and already resolved situations. Reply context may clarify a short question, but another person's request is not attributed to the reply author.
A working lead list
In /leads you can search text, save favorites and mark a request New, Contacted or Obsolete. Team members can claim a finding, with a check against simultaneous assignment.
Sources and repeats
Identical text appearing in several accessible groups can be combined into one short-window alert while keeping original links. Opening a private source still requires membership in that chat.