Cautious opportunities

Facebook, myspace, second life, I think they are all really interesting and probably provide us with opportunities to reach a greater proportion of our clients but I can't help but think if everyone is out there on facebook myspace and indeed second life simply becomes a replica of our first life, will our clients stay there? I think these are transient spaces that will become victims of there own popularity and people will move on to other spaces, looking for that exclusivity and connection...which is all fine and they way it should be, however I think we need to be conscious of this when considering the time and resourcing we commit to social networking sites. I also think we need to start thinking seriously about how we evaluate the success these tools in a library context.