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I am agree with Valdis.
My work "Muslim women on-line (MWN)" shows the same result. I classified
the participants to 3 types: actives, passives and lurkers.
Comparing the number of people who subscribe to the group with the number
of members who post some messages to MWN shows that almost 40% of the
members are lurkers.
The paper is available on Prof. Wellman's homepage:
"Muslim Women On-Line" By Susan Bastani. Arab World Geographer 3 (1),
Most of the members were among the lurkers.
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> You need to be careful how you collect data from an on-line
> community... you may end up with just one/few of the components.
> Here is a graph of an on-line community where people had to register to
> join -- it is around a common affiliation. Notice how much of the
> network are lurkers/isolates -- those who have not interacted with
> anyone else in the community.
> http://www.orgnet.com/OnlineCommunity2.pdf [large file 3.7MB]
> On May 17, 2006, at 6:06 PM, Elijah Wright wrote:
>>>> Getting the bulk data out of LiveJournal is trivially easy. The
>>>> others, not so much.
>>> Livejournal doesn't provide feeds of what communities people are in,
>>> however. It's too bad, because having that affiliation data could be
>>> really interesting. As it stands now you have to screen-scrape for
>> Yes. You have to work things the other way - collect the FOAF for the
>> community and then extract the membership lists from there.
>> We assume that this is an artifact of how their backend storage is
>> structured, but haven't really done the digging to make sure...
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