Bestworld
MBA
And what about ''I read somewhere in this web that some ilvl thing in your bag could count for your average ilvl or something like that. ¿Is this true?''
No, it is not true. during pre-patch, before they revamped everything, encouraging you to wear appropriate class armor/weapons, I had Stratholme Lily in my bags on my rogue. It did not count towards anything lying in my bag, however, if I equipped the item at the time, it would increase my stats. Obviously this wasn't worth it since I'd lose offhand damage by quite a bit.<
Edit: On armory it would count towards your average item level, since it's equipable, but it will not count towards any stats in BGs/Arenas, lying in your bags. If you have DejaCharacterStats addon, you will also notice that you have equipped x/y ilvl. Y being your maximum ilvl that your character can equip with the items in your possession.