slides for the notes presentation @ cscw 06

1. what goes around
comes around:
del.icio.us as social space
kathy lee
stanford university
cscw 2006

2. what is del.icio.us?
browser bookmarks del.icio.us
saved locally saved online
organized in folders organized by tags
subscription network
public

6. research question
how might del.icio.us users
perceive the presence of others?
how might
di erent degrees of perceived social
presence in uence users’ posting behavior?

7. perceived social presence
how might users perceive social presence?
subscribing to others
returning bookmarks

8. josh donna
http://del.icio.us/network/donna
http://del.icio.us/josh/
http://del.icio.us/donna/
http://del.icio.us/network/josh

9. annotations [tags]
Screenshot utility for web pages
[graphics mac free]
Maybe a bit too academic, but I like it
[web2.0 web2con]
last night we were taking bets on when del.icio.us
would appear in the NYT. no one guessed
‘tomorrow morning.’ [del.icio.us news nyc]

10. tags v. annotations
tags annotations
individual oriented toward others
organize bookmarks describe bookmarks
search bookmarks space to ‘talk’

11. research question
how might perceived social presence
relate to a user’s
likelihood of annotating a bookmark?

12. hypotheses
perceived social presence ➔ social orientation
➔
has subscriptions
# annotated
➔
no. subscriptions
bookmarks
no. returning bookmarks ➔

13. dataset
8058 users (Golder & Huberman, 2005)
1.75M bookmarks
195 days (jul 21, 2005 ~ feb 1, 2006)

14. avg. del.icio.us user in sample
max
217 bookmarks 9268
62 annotated bookmarks 9253
2.8 tags per bookmark 47
3/6 subscriptions 371
2/16 returning bookmarks 1026

15. subscriptions and annotations
48% subscribe to others
23% have mutual subscriptions
30% of bookmarks are annotated
97% of bookmarks are tagged

16. estimated e ects from regression
1 2
# bookmarks .84** .77**
avg # tags .17** .14**
uses network .23**
# subscriptions .006*
# returning bookmarks .19**
* p < .05 ** p < .001

17. regression predictions
45
43
36
27
21
18 20
16
9
0
16 returning
solo uses network 6 subscriptions bookmarks

18. discussion
reading others’ bookmarks conveys presence,
but returning bookmarks reinforce presence
returning bookmarks are subtle
recommender systems that convey and
reinforce subtle presence encourages
metadata?

19. thank you!