HI,

The advantages of web2.0 technologies are as follow.

# Reduction of cost
# Flexibility, as far as the posibility of choosing technologies is concerned.
# Easier and faster access to information, When and where it is needed.
# The integration of a varity of technologies in the teaching-learning activities.

Where disadvantages are

# it leads to a low quality of the actual content
# it promotes amateurishness by invaluable contents generated by users.
# it gives everyone the oppurtinity to complain, thus creating a community without rules,

Nice sharing John.You can go for both Linux or Windows based web hosting for your Web 2.0 web site. Make sure that it has the ability to supports a number of web files as well as scripting languages.