Social networking sites from vietnam.

hi,

can you give me some comment about this site: (remove space)
h t t p : / / t a m t a y . v n

site type: Social networking sites

include feature:
+ audio
+ movies (like youtobe)
+ photo
+ group
+ friendship
+ bookmard
+ wedding album votting
+ blog
+ forum
+ private home page
+ events
+ networks
+ rss
+ mobile (news/review) w w w . t a m t a y . v n /ttmobilenews

this site is not by me, its from a small younger comany in vietnam
im post here because this site make me belive Drupal can do more than i think.
and i want to discuss here, to learn how to build other site like this

thx