Pruned

[Lanell]

When a 4chan [thread] gets deleted cause of [old age] and inactivity. If a thread is popular i.e lots of replies from different people then the [lifespan] of a thread gets extended

[Jessica]

In private [BitTorrent] site jargon, a pruned account is one that [got deleted], usually due to inactivity on the tracker. [Use it or lose it].

[Dianne]

past simple and past participle of prune