Spoiled by the Gnome Terminal application's tabbed shells, I was looking for a similar terminal with support for tabs on OS X. The default Terminal.app doesn't support tabs. A friend adviced using iTerm, but found it rather slow and unresponsive.
So back to tab-less Terminal.app. Then I remembered this command line gem called "screen" which I used a while back before being addicted to Gnome Term. It lets you multiplex your terminal, giving you the same tab functionality within a single terminal session.
Happy screen multiplexing. Because in the age of enevitable multitasking, life needs more than one active terminal session. :D