[MMM]

Necroposting means reviving essentially dead threads back to life, or at least to zombie status.

I have noticed lately some members are going back and reviving threads that are three, six, nine months, even over a year without a last post.

That is fine if you have something significant and valuable to add that makes the thread worthy of revival.

However if you are you are just saying "Yeah, I think so, too", or something that isn't groundbreaking or informative, best to let dead threads lie.

I see new users answering questions asked by users who literally haven't been on this site in over a year or more.

Look at when the first post was made, when the user was last on, and think whether or not what your are contributing will be interesting to users who are on now and whether or not you are saying anything that hasn't already been said months or even years ago.