now orkut has introduced a new feature called instant scrapping by which you can reply to other's scrap just by clicking the reply button.. check the screenshot....

http://smartjean4u.googlepages.com/instantscrap1.png
http://smartjean4u.googlepages.com/instantscrap2.png

New! Add moderators
Owners can create up to 10 moderators to help manage their communities. Moderators can remove inappropriate community topics, messages, and events. They can also accept, decline, ban, and remove members and posts.

Yep, orkut is being worked on :)