To post in a thread that has been "dead", by being inactive for a relatively long period.
necropost [ English ] Verb to necropost (third-person singular simple present necroposts, present participle necroposting, simple past and past participle necroposted)
(Internet) To post, as on a forum, to revive a long inactive discussion thread.
stubby wrote:...... It (a) makes good sense and (b) makes silva wrong, so I like it on multiple levels.