I'd prefer a networkless game, but I do think that with a bunch of wizards around, it makes sense to have communication methods that are more convenient than letters and pigeons. But something like a magical amulet or a scrying pool would probably function more like a walkie talkie or cell phone than a magical jamjar network communication device that can be used for public IC blogging. It just doesn't make sense to have widespread magic and then not use it to solve a basic social need for rapid, long distance communication. It's been forever since I played DnD but I vaguely remember a spell where people could send voice messages using wind.

Nobody wants to see lazy players scrape by on AC by boomerang tagging a quick dialogue-only log right before AC is due, but ideally players who aren't participating in a meaningful way can be dealt with by mods.