I like that it is easy for anyone who has an email account with access can use this product (not just IT people).
It also allows you to set up multiple accounts so if one person leaves then another does not go down as well which makes life easier for us all! There isn't much i dislike about using XOOM but there should be more options/customization available such things are very basic at present compared what other products offer out of box features- maybe they could add some customisation? We have used xoom before however we had issues where emails sometimes went missing or were sent from different addresses when sending messages between users hence why its worth having 2 separate user names linked together instead - saves confusion!!