SAN FRANCISCO: Digg, a popular social news aggregator, is reviewing PR agencies, according to several industry sources.
 
The site has narrowed its search to four firms of varying types and sizes, PRWeek has learned from several sources close to the review. Digg PR director Kiersten Hollars declined comment. Karbo/Fonkalsrud Communications has previously worked with Digg and currently lists them as a client on its Web site. When contacted, the agency declined to comment.
 
Digg has not been ...