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Typical case:

Blog post links for http://blog.mathemagenic.com/

1079 links (740 shown) to 175 different domains
2 of top ten linked to sites are in blogroll.
* indicates a site present in blogroll.
247 - http://38.116.0.19
234 - http://radiocomments.userland.com
99 - http://www.waypath.com
46 - http://www.knowledgeboard.com
14 - http://www.kmeurope.com
14 * http://www.mcgeesmusings.net
13 - http://paolo.evectors.it
13 - http://www.livingroom.org.au
12 - http://topicexchange.com
11 * http://radio.weblogs.com/0110772
10 - http://www.corante.com
10 - http://www.headshift.com
9 * http://denham.typepad.com
8 * http://www.roell.net/weblog

Blogroll links for http://blog.mathemagenic.com/

68 hits to 10 of 11 Blogroll sites.
90.9 percent of blogroll is linked to.
Number of references to each Blogroll site.
14 http://www.mcgeesmusings.net
11 http://radio.weblogs.com/0110772
9 http://denham.typepad.com
8 http://www.roell.net/weblog
7 http://seblogging.cognitivearchitects.com
7 http://www.zylstra.org/blog
4 http://radio.weblogs.com/0121664
4 http://www.elearnspace.org/blog
3 http://ross.typepad.com/blog
1 http://www.dijest.com/aka
0 http://www.downes.ca/news/OLDaily.htm

These results were typical for 4 out of 5 blogs examined