So, I want to report back on my experience with copy.com so far. I've been using this cloud storage now for a couple of weeks and I'm storing most of my work documents on copy.com.
The Sync App
The sync app is seemless, install, configure the path and let it sync. The interface of the app is straithforward and clear. It installs itself as a tray application and it the copy folder is shown as a link in the favorites list.
Only 1 folder that you can sync. (not really)
The sync app only allows for 1 folder that can set to be synced (with MEGA you can set multiple folders). This is however not an big issue because the app has a clever mechanism to detect shortcut links and will sync also the content of the shortcut link. So what this basically means is that within your copy folder, you can put shortcuts to other folders and they will be synced also automatically.
Excluding files/folders to sync
You can select what files and folders you want to have synced within the copy folder. This is handy if you have some large or maybe "sensitive" files in the copy folder. These files/folders exclusion must be set on each computer so you can exclude the sensitive files on your laptop but include them on your desktop (for instance). To learn more about this see this blog post on copy.com.
So far, I didn't find any way to exclude files based on filename (wildcards). This could be handy if you do not need files of a certain type to be synced.
How it works day-to-day.
If you have multiple computers thay you frequently use (like a home computers and a work cmoputer or laptop), then the sync app is a must have. It allows me to keep all my work documents in sync and I never need to bother with things like "do I have the latest version", "where did I store this file" etc ...