Access your files remotely; sharing them

Ever have this problem? You're away from your office, and you need to access some of your files. Or this one: You need to give colleagues or clients access to some files? Here are some options:

• You may use a backup service like dropbox (getdropbox.com). This backs up all the files/folders you want and then allows you to share whichever ones you want with whomever you choose. [It also will synchronize files between multiple computers].
• You can rent space on a file sharing service and put some of your files there.
• You may use Apple's Mobile Me service (or related service from Microsoft, live.com)
• You may use a small inexpensive device, like Pogoplug (www.pogoplug.com). This costs $99, and you may attach one or more disks to it (usually on your home network). This makes whatever files you put there available via the Internet. You may share what you like.

Note that none of the above options require you to leave your home office computer powered on while you are away.