Can PS3 gamer tags have spaces in them?

I am started a clan and wondering if PS3 gamer tags can have spaces as it wud make it look alot better!Can PS3 gamer tags have spaces in them?No they cannotCan PS3 gamer tags have spaces in them?No sir they cannot! Try and get a really unique name, nothing that is very common.Can PS3 gamer tags have spaces in them?No they cant, they can have_which is sort of like a space but i hate it when people use it for gamertags