User blog comment:TAGDavid/Tips/@comment-6881157-20140719033949

Whether or not you should link attack has nothing to do with the critical of the attack. It's the fact that some decks use cards that say "Nullify the attack if it is not a link attack." If your opponent is using that card, then you should link attack so that they cannot nullify it. If your opponent isn't using those cards, then you should not link attack because it might get nullified.