Social Bookmarking is a form of SocialCollaboration, where the peers share 

* their ''work'' for discovering and tagging valuable webpages and 
* also their ''results'' in form of publicly accessible bookmarks.

This means, they give each other a 

* (currently) free ''service'' of searching, tagging and storing  and 
* share their ''good(ie)s'', i.e. collections of bookmarks freely. 

Currently all service providers (known to the author) offer their Bookmarking Servers as a free service.

Read more on this topic in: [en.wikipedia.org/wiki/Social_bookmarking Wikipedia:SocialBookmarking]

''The problem with this kind of a "free bubble"'' is, that it might not stay free for all the time.
The providers refinance their free service with advertisement or they credit it on the speculation, that at a later time, they can sell their complex hardware/software/service package to a big player like Google.

Now this doesn't solve the fundamental problem, but escalates it ownly.

As soon as Social Bookmarking Communities and their technology evolve to such a level of sophistication, that advertisement becomes superfluous, the bubble will burst and the illusion of a ''free for all paradise'' dissolves abruptly.

-- FridemarPache

'''Discussion:'''

What do you suggest to do? Ride it to hell or prepare a soft landing? -- [http://fridemar.com fridemar] 

FreedomHosting is meant to solve this exact problem. -- PatrickAnderson