Wednesday, 5 October 2005
Web 2.0 Tagging Study, Part 2: Private vs. Public Tagging 
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Last week I posted part 1 of the Simpy tagging study, where I looked at how much we tag. That study showed that Simpy users are hard-core taggers, tagging nearly 99% of all links. We also learned that almost all tags are single word tags, with only 2% of all tags being multi-word tags.
While most Social Bookmarking services, including del.icio.us1, force their users to expose all their links to the public, Simpy lets users mark links as private. No, that does not mean that Simpy is anti-Web 2.0 and openness, it just means I want to give people the control over their own data. The natural questions to ask are: How many people use these features? How many links are actually private in Simpy? And the answer is in the following figure.
Apparently, about 7.3% of all links in Simpy are private links. Apparently, some non-negligible portion of Simpy members do like to keep their links to themselves, and I bet they are not all p0rn links.
Once I found out that a little less than one tenth of all links are private, I started wondering whether there is any difference in tagging behaviour when people tag their private links vs. their public links. After all, they must have some good reasons to keep certain links private, so maybe this affects how they tag them. After a bit of investigation, this is what I came up with:
So much for private vs. public analysis. If you have some other ideas or requests for additional types of analysis, feel free to email.
In the next study I'll look at chronology of different aspects of activities found in a Web 2.0 Folksonomy service such as Simpy.
[1] I'm sure Joshua & Co. are working hard on private links.
Comments on this entry:
This has been a great series. It is very interesting to see some of the statistics from Simpy. I would love to see some other random stats...which url has been posted the most, what is the most common tag (both single and multi word), I would also be curious to see over a few days what number of links are posted, and how many are unique.
Regardless, its a great series, thanks.
Sean
Good bit of info so far Otis. I always preferred multi-word tags myself, and I wonder why people would use single words. Maybe people don't know they can use multi-word tags? I think the fact that some services separate tags by spaces instead of commas or other more sensical means, affects this. I remember the first time I used del.icio.us for example, I had this problem. I think also that many people still do not know how to tag because it's still a new concept (though something we use to remember information about real world items all the time). Looking forward to seeing more from this series.
It'd be interesting to see a figure filtered by whether people use the private option or not.
(maybe people who do, also use more tags for their public links than those who don't.)
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