Sega unveils humanoid robots, capable of laughing, loving and crying. The family includes C-BOT which communicates via a digital display face on its head and by a cell phone. Other members are Y-BOT, which is touted as the robot that can talk back and learn words, and M-BOT, which is expected to dance along with music. Another robot, however, Robo-chi, can’t walk because it’s a baby. • Those little virtual business cards that some people attach to their e-mails might be dangerous. Microsoft announced Friday that a flaw in its Outlook e-mail program allows crackers to crash or remotely control computers and entire networks, via virtual business cards (Vcards) that harbor malicious code.