Date: 4/19/12 10:08 PM You can,,,but I sure wouldn't recommend it! Take a strand of Maxi-Lock serger thread between your hands and try to break it by jerking your hands apart. Pretty darn easy, huh.
How secure would you feel wearing something sewn together with that?! 
Serging uses a lot more thread per stitch than sewing does, so serging thread is much finer, to avoid bulk. For sewing, it's just not strong enough. For decorative sewing, serger thread isn't a problem. 
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I heart Panzy, Pfaff Creative Performance, the sewing machine love of my life! And Rupert (Pfaff 2023), Baby (BL Enlighten), Victor (BLCS), Ash (Bernina 350SE), Pal (Bernina 530), Kee (Bernina 750) and the Featherteen Flock!
Most of all, I heart Woo (HimmyCat). Until we meet again, my beautiful little boy. I love you.