iCloud power user, take a gander at the MobileMe email from MacRumors above -- that's what to expect when you approach the 5GB storage limit. Apparently, automatic backups and your MobileMe account's email traffic will pause until you delete some files or purchase more space via your iDevice or a computer -- for an undisclosed cost. That's one sliver of info which Apple's remaining tight-lipped about despite unveiling the mostly free cloud service weeks ago. Also worth noting, as TUAW points out, is that content purchased within the iTunes ecosystem won't impact your quota. Hey, those app downloads can sure make it easy to fill up a drive, ya know.