I try to report spam posts especially when I see them tacked onto the end of a thread that has not had recent activity. Usually when this kind of spam appears, the spammer is just running through a forum and adding the spam posts to many threads. If you try to report these spam attacks you need to wait 1 minute in between your reports. These spammers can add their spam messages to a dozen or more threads and as someone who wants to report the spam, it is indeed inconvenient and time consuming to wait 1 minute between reports. It is ironic that spammers can post their junk in rapid succession, and a member has this restriction placed on reporting the spam.
All the best,
GJ