not only will this shared approach enhance language teaching. but it will also have an impact on continuous professional development, with teachers creating their own personalised pages, drawing together blog feeds,video meterials,essays and articles from a variety of sources into an ever-changing personnl development site of their own. a site like this will constantly evolve and update to suit the teacher's development needs at any given point,and as such will be vastly different from more formal learning situations. and be based on 'just-in-time' solutions to particular training needs which involve a wider collection of people,all working towards shared goals. in effect, Web 2.0 may well become the biggest it up in Wikipedia. if you want to investigate the kind of things which can be done in Web 2.0 you could start by looking at 'All Things Web 2.0'