Get unbiased advice before you buy. Briefcase is a very handy service. But you should be careful in uploading Real Audio files and controversial files. Briefcase is one of the most famous storage space in the internet. Briefcase allows you to store files of any format.
Any format is acceptable.
This service is quite handy, if you don't want to carry ZIP disk or CD, and if you want to share the files with your friends. In the past, they offered only 10MB or so. But as of this review, they offer 25MB, which is decently large. As the matter of fact, it's not very likely for users to have single giant over-25MB file. Thus, storage space problem is getting very minor.