If you want to send files to others, dushare is a free service that will allow you to send files via simple mouse clicks. No files size limit for send files. Dushare claims that they provide maximum speed for send files. No sign up is required for using it.
You can simply upload your files into dushare after your upload you will get a URL this used for sharing files. You can also give password protection for files. Another important features is dushare provide a chat room.