Dropbox - free seamless syncing/sharing tool

I discovered Dropbox last month and have used it extensively ever since

What exactly is Dropbox?

• Dropbox is the easiest way to share and store your files online. Works like you do
• No complicated interface to learn. Dropbox runs in the background on your desktop.
• Worry-free syncing
• Sync your files automatically to your computers and the web
• Works with Windows/Mac/Linux
• It has version control
• No file size limit
• Sharing capabilities

My reasons for using it

• 2GB is very generous
• OFFLINE CAPABLE
• No uploading required, copy-and-paste is so much easier
• Sync my browser favorites
• Sync My Documents, and backup
• Sync my RoboForm data
• Store my tools/utilities to use everywhere, such as TreeSize, Sysinternals tools, and TeraCopy
• Share Photos easily without worrying about "uploading" such as Flickr/Picasa albums. I just copy-and-paste into the Photos folder
• One-off file transfer between computers. Say I need to transfer a file between my desktop and laptop, no longer do I need to type in file://laptop/share and set it up, I instead just copy into Dropbox folder.