I was watching vods of Wobbles at Forte 3 and he activates a freeze glitch on SFAT. I was curious about the glitch so I looked it up on Smashpedia (http://supersmashbros.wikia.com/wiki/Freeze_glitch) and it said that the glitch was banned in tournament. Then I started thinking about the invisible ceiling glitch that was activated unknowingly by S2J vs Abate. So my question is, what is the official/standard for the use of glitches in melee? Ignoring glitches that have no effects on altering game play (e.g. changing stock heads, or 2 players playing the same colour of the same character etc), what about Ness's yoyo glitch that attaches a constant hitbox on Ness (http://supersmashbros.wikia.com/wiki/Yoyo_glitch) and follow ups to that glitch? Are glitches like freeze glitch and yoyo glitch legal? From the fact that the community seems ok with allowing inadvertent glitches changing match results (See S2J vs Abate), I feel like intentional activation of glitches should be fine as well if they are activated from within the actual fighting (not from the character select screen and such as required to play as masterhand and whatnot).