I bought the Dockstar and a GO drive for use with my home network. I liked the idea of using it as a portable USB drive when away from home, and also sharing it with the computers on my home network without needing a host computer always on. The ability to access it over the internet was not important to me.
Like many of the other reviewers, I was surprised that there was virtually no documentation. It was very easy to setup and it worked right out of the box. However, I was surprised that I had to go to the Pogoplug website to activate and configure it. Like others, I am concerned about how secure this arrangement is. Even though I don't intend to access my drive from the internet, it seems that the only way to configure it is to do it from this website. I would feel better if there was a way to configure it without accessing it from the internet. Also, a note of caution: make sure you type https when typing in the web address. If you don't, you'll be typing in your password over a non-secured connection! I can't believe their web site allows this.
The Pogoplug service is free for the first year, but there is a charge after that. However, it appears that you can still configure the Dockstar from the website even if you don't pay for the Pogoplug service. Here's how to use the device on your private network without using the Pogoplug service and software:
1. Register the Dockstar with the strongest password you can come up with. Remember that during the first year, your files are accessible on the internet if someone can crack your password.
2. Log into the Pogoplug site and click on Settings in the upper right corner. Then click on the WFS (Windows File Sharing) link on the left side. Click the "Change workgroup" link, and enter the workgroup name that you use on your network. Then set the drive to "Read and write" and sign out.
3. On your computer, click on your network and refresh the list to display all the devices on your internal network. You should find a new device with a nonsense name. This will be your Dockstar drive. You can map it to a drive letter if you like. Now you can use your drive like any other shared drive on the network, without installing the special Pogoplug software. The only time you should have to log back into the website is if you change your workgroup name (so don't lose that password!)
Note that there is no way to restrict the drive to certain users on your network. It will be available to everyone. If you want to store anything private, download TrueCrypt and learn how to use it (probably not a bad idea anyway, since the drive is portable!)
For my purpose the device works fine and I am happy with it. Before you buy the device, you should evaluate whether it will meet the purpose you have in mind.
UPDATE: After writing my review, I ended up returning the Dockstar. I learned that you cannot even eject the drive from the Dockstar without logging into the website and doing it from there. Also, I learned that there are now routers that have a USB port and allow you to share a drive on your home network that way. That approach seems closer to what I want to do, without the hassle and security concerns.