with every mmo review that comes out i look to the publisher to tell if i know what style the game will be, it's one of the ways i base if i'll like a game, because i have a tendency to like certain publishers work more than others, if only for the style of gameplay. I think it might be nice if when you clicked on the publisher it took you to a list of games by that same one, or you could have an alphabetical list of publishers just like the games list, as another way of making the website easier to use.
i hope this helps in some way.