What this  slide shows,  more than  anything else, is how  much on-line  communities are 
growing.   There is  significant growth  across all types  of communities with the exception 
of spiritual communities  which witnessed  only small growth.  Hobby-oriented,  social and 
professional  groups already  attracted significant  numbers in 2005 and,  while they grew 
substantially, they grew at smaller rates than relationship-oriented and politically-oriented 
groups.   It is extraordinarily significant  that hobby-oriented and  social groups on-line al-
ready reach close to half of all Internet users.