I don't. because either
a) I'm well over-geared
b) I'll simply link my achievements if I'm on an under-geared character
c) I don't pug anything but world bosses at the moment.
Whenever someone asks me for my item level i just reply with something sarcastic like 5000 gs inv pls. Surprisingly i've yet to be not invited or removed. I guess they either see my HP or armory me and check after i give them a dumb answer. I hate getting asked for my ilvl because 10/10 times i put myself in a situation to get asked it, its when im helping my GFs alt run throne of thunder or SoO flex on my 570+ war.
I don't. Never have needed too.
Thanks to Serryn for the great signature. Druid
Some times on my alt I might add 5 item lvl or so to get in to a pug :P
Strangely this idea never came to my mind, cheers
I've got a 570 ilevel and never raid with pugs so I have nothing to lie about.