Reporting users who abuse rule of bumps once per 24 hours and who not delete old bumps is something that I personally almost gave up, because in my experience none of the users received any penalty other than the eventual deletion of posts. In this case users Lols601 and Storm66 are not very intelligent with their bumps, some do it in a much smarter way by creating alt accounts from time to time, which then are not easy to prove are really alt accounts.

An obvious example of such behavior can be seen here.