Update: Thanks Priya for the info! Corrected authorship below.
It appears that we have another Orkut hack that might dethrone Orkut Cute from its number one position.
Developed by Binny K Mathew
Priya (from India), Orkut Scrapper 1.0 gives users the ability to see a live preview of their message before posting on their friends scrap book. It also adds a reply button within the scrapbook, making it easier to notify your friends. Here is a screen shot below via the official Orkut Scrapper blog. (click on photo to expand)
Their are a host of features associated with Orkut Scrapper including the ability to send invisible scraps, delete all your messages in your scrapbook (very handy if you are being flooded), although the ability to flood someone else's scrapbook may not make Google very happy.
Priya is also promising to add According to Priya (a friend of Binny's) there will be even more features such as the ability to change one's background skin as well as a scrap alerter.
For a list of more features (future and current) regarding this hack please visit the Orkut Scrapper blog (or the forum) for more details.
Note: Will be listed under Orkut User Tools on the sidebar.
Update (11:41 AM): It looks like Orkut Scrapper is no longer working after Google updated the scrap book. Sigh.