MTGGoldfish Metagame Question

Does anybody know how MTGGoldfish determines which decks are similar enough to lump together? Or if there is some way for the users of the site to separate decks into separate archetypes in a way that is similar to their deck naming feature? For example, I noticed today that UB Flicker and UB Alchemy got combined into one deck, UB, shooting the archetype up to #2 on their list. Obviously these decks play some of the same cards, but they are very different in play style and have quite a few cards that are different. On a related note, some people should go on there and fix the names of decks, especially Tron (which is definitely not Jeskai Drake).