In English it means "Do your activity, please"

"selamat beraktifitas" Used when you want to start your day. (Just like Renata said, I just adding ) it might the same with "Have a good day"

selamat beraktivitas! ummm.. i don't how to say this in english. it's just words you say to somebody who's going to work / to do his project, or something like that. just like when your friend's going to sleep you say, 'have a nice dream..' or maybe 'sweet dream..'

Hello, I am cynthia, I saw your brief details and decided to write you. I want to make a good friendship.I Feel we shall make a better introduction in our next communication. contact me through my email address ([email protected] ) for more details and my pictures. I will like to know you better for more personal information, please do not write me on this site because i do not visit the site all the time..kindly reply me with ([email protected] )i am waiting . Thanks

The meaning of selamat beraktifitas atau bekerjalah dengan baik" is what work well!