I only use Messages for SMS and rarely every send MMS (let alone gifs) so my usage is only at 12MB.
This makes me wonder how data usage is handled with iMessages, is it kept entirely local or does iOS only pull down X percent from iCloud?
Out of curiosity, Dave, that 5GB is spread out over how many months? With a capped data plan that can be a bit scary :)
EDIT: I realize I am equating phone storage to data transmitted, but if you think about it all that data had to be sent over the wire at some point
I'm only at 2.4GB right now and I've restored my phone from my 3G to 4 to 5s. Dave obviously sends more .gif's than I and is probably way more popular, but I'd guess that iMessaging is the least of your worries with a capped plan. I still text quite a bit and I've noticed that sent images are downsized on the other side which should mean that my 2.4GB is really a bit less that on the other side.
I'm at 4.1 GB. I also send loads of photos and videos (not so many gifs, even though they're awesome sauce), but thankfully still have an unlimited data plan since I pay full freight for phone upgrades.
I know it's been awhile, but my messages take up 10.7 GB!!! What do I do to get this cleared out?