We made a few changes to the way SkypeWeb works so the video is slightly out of date.

If you don’t want to share your presence information then, when user queries your name they will see a “I’m not telling” image instead of the “Call Me” image.

We fixed the issue where the XML string would return someone invisible status. If you set your status to invisible then you will appear OffLine when someone queries your status.

Finally the problem with the Offline status not working correctly, we have fixed the problem, as it part of the client it will be available when we launch. There won’t be an interim build available.

The rest of the video is still valid.
You can watch it here.