I like that it is very easy to navigate through as there are not too many steps involved at any one time or stage of an event (we're talking big events).
It's also great if you need some help but don't have someone who can dedicate their full attention towards helping out with this type thing! There isn’t much we dislike about CCB - though sometimes when using email communication they tend go missing so make sure you keep track!! We use CCB every Sunday morning now which has made things easier than having meetings where everyone needs be present physically each week/month etc...