User blog comment:Ultrasonic9000/Sonic Underground Conclusion/@comment-24.192.27.187-20130407231707/@comment-5354215-20130407234429

Exactly, there never was a rule, but saying "Don't comment on old blogs" is enforcing it. So commenting on old blogs may be pointless. But does that mean we have to go round saying "Don't comment on old blogs" all the time? It doesn't. If a user comments on an old blog, leave them be.