postathon

plural postathons

1. InternetslangA period in which many messages are posted (as to an Internet newsgroup or forum).

   As if your hair-splitting, shifting-sands postathons are the lonely voice of reason in an uncomprehending universe.

   2004, Hawkster, “Memorial day 2004”, in alt.radio.talk.dr-laura (Usenet)

   1 more example

   My first few days are always postathons because I'm catching up to all the old posts. If I was working at the capacity I was at before, I'd be up to about 150 by now, you know.

   2001, SmUK, “SmUK”, in alt.tv.red-dwarf (Usenet)