Recent Global Posts Feed - Racks up 14224148KB In

I am using the recent global posts feed and placing a feed across the footer of my site wide, my site then hit bandwidth limits, I checked the stats to see this:
Hits | KB
85482 14224148 13.24% /blogs/wp-content/recent-global-posts-feed.php

That's over 10gb of data transfer, and I have only 15 blogs. Is something wrong here?