Pretty sure all of the rules work, "boniposter" works too, I've tried many phrases (our poster names, life is wonderful, names of tokfus, some other specific phrases we use), all of them are worthless, as in else return nothing or way too many results to sift through.
Some embeds work and some don't but if someone is determined enough they would find us through them, for example " 7284094784153652511_h264" works on ddg, just "7284094784153652511" doesn't, same for google, 7386511548971322666 works just on ddg, "7386511548971322666_h264" works on both, it's very strange.
Don't have much more ideas really, but I've checked most things that are remotely possible to guess I think, even some phrases that should work don't work (I've just put in "tokfu" "rules" and it just responded with nekochen and sturdy)
Also it depends on the search engine it seems, google seems to really not like the rule 1 and just returns nothing there.

Since I'm against nuking whole threads especially if it means we wouldn't be able to use boniposters name and would have to rephrase the rules I think we just live with it. Especially since embed names will stay an option most probably.

So basically, it's not impossible, but requires a fair bit of ingenuity, randomly getting here is probably impossible, but if you know how we post and what we post, it's just remote chance but not impossible.