The ease of use, it allows easy sharing with coworkers which is great to keep up-to date without ever having someone pull you away from your workstation or leaving their desk for meetings etc all while being able share in real time as well so that's pretty cool! Nothing really at this point except maybe price but they are very inexpensive compared other solutions out there I think we paid around $20/month per person when first looking into what was available before finalizing our choice (we have 3 people working remotely).