This is a very interesting categorization by Bruce Schneier of social networking data. This potentially allows for more granular assignment of rights for each data type.
Bruce defines 5 basic data types in his taxonomy. To quote, they are:
Service data. Service data is the data you need to give to a social networking site in order to use it. It might include your legal name, your age, and your credit card number.
Disclosed data. This is what you post on your own pages: blog entries, photographs, messages, comments, and so on.
Entrusted data. This is what you post on other people’s pages. It’s basically the same stuff as disclosed data, but the difference is that you don’t have control over the data — someone else does.
Incidental data. Incidental data is data the other people post about you. Again, it’s basically the same stuff as disclosed data, but the difference is that 1) you don’t have control over it, and 2) you didn’t create it in the first place.
Behavioral data. This is data that the site collects about your habits by recording what you do and who you do it with.
Take some time to peruse the comments. Quite a discussion.
Article here
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