do u think TAG is better than category

hi all
i played around the latest version of NopCom, i feel that the TAG is better than category,
e.g i'm selling iPod, i could put more than one tag(IPOD, MP3, Music, Apple.....), while IPOD is only under "digital device" category.
tag is many-to-many, actually tag is better to describe one product and easier for seaching.

just wondering will nopCommerce implement this feature in next version?

maybe maybe

a tag feature would be much appreciated.
i'm thinking of implementing a tag system in the current release, because just the product categories aren't enough.
another similar feature would be filtering by product specifications. (cpu socket: am2, 775, 745)

i found the "category" in NopCom is also playing the role of TAG. this is a smart idea!