Interesting, why dropbox and box though? The rest of the services seem like the perfect cocktail if you want to send a uniform message across several types of media.
CloudRail is community driven. Everybody is able to add services so we don't have much influence on it. Any suggestions what is missing?
Repostet it due to a flag of a post people were really interested in. If you don't like it don't vote, but please let others check it out.
Then you should be prefacing the title with "Show HN:"