Flash USB drives: backup easily, conveniently and securely

If you already backup often, you are doing the most you can to secure your files against accidental file deletion and recovery, file damage and what not. But what can you do to make the backup process easier?
You may as well use CD to backup, but you will either need to dump CD-R discs often, or insert a CD-/+RW discs often to make another backup. Someone else can also misplace your backup CD disc or overwrite your backup data with other information. Moreover, a CD only admits about 700Mb of data, which may not be convenient. Nor is storing multiple CDs of your backup copy.
The same can be said about backing up to DVD. Of course, a DVD admits from 4.7Gb to about 18.6Gb of data, but is it really convenient backing up to DVD? An external hard disk drive or a flas View the rest of this article