No he doesn't need to post every five seconds (and gain some 7000 posts ), and I think he didn't, but he is a "guest" so I think it is no coincidence that he left the forum obviously. But maybe I should better stay out of this thread...
LE
Who if not you (or me) knows exactly how this thing works — if you want, you stay, if you don't, you go do something else.
I guess only reason the guy in question left the topic is 1) because he didn't received many responses and 2) the £800 perk is gone anyway.