It's still very much possible, I've done it a few times recently. You just need lag.
Report, edit, etc...Posted by Mini Moose 2707 on 2006-04-21 at 23:18:45
After a certain length of time I think it goes to a new post instead of an addition. I generally won't punish you unless you're posting the same thing twice... in which case I just delete the post (-1 post, 16 minerals), unless you're doing it several times.