Orkut is highlighting scraps sent from mobile
Orkut added support from mobile Orkutting sometime back by creating a mobile optimized version at m.orkut.com.
Today I noticed some scraps were marked as being “sent from orkut mobile” as highlighted below.
Initially, I confused it with scraps sent from mobile phones as SMS. I guess in Brazil people can use more Orkut features via mobile SMS than getting scrap notifications.
On side-note, even though Orkut do not list Airtel as supported carrier for SMS notifications, its working now! 
good job