I receive PM spam about once a week here at DP. Wouldn't some restrictions for posting private messages discourage such activities? example: biancagarrett79 sends me spam about SAYSEODESIGN.COM biancagarrett79 has registered today, 19 March. biancagarrett79 has 0 posts on DP. biancagarrett79 sent the PM to Alecoalec, alecs, Alecsandro, alecsandru2006. Does anyone see a pattern here? Why aren't PMs restricted to anyone having less than x posts? Or anyone registered recently?
Suggested and rejected multiple times, because it would be more trouble than it's worth - would stop legitimate PMs (such as people needed assistance from mods), and would lead to more public spamming to reach PM post count limits. We get enough garbage along those lines right now. For the time being, forward spam to mods.