The Korea Times has an update on more products found to contain melamine:
Lotte Confectionary’s “Choudy”
Nestle’s Kit Kat Mini
Mars Korea’s Peanut Snickers Fun Size and M&M’s

that’s in addition to the already identified:

Misarang (custard and coconut flavor)
Nabisco Ritz Cheese Cracker Sandwiches
Lipton Milk Tea Powder
Cadbury chocolates
Creamer and coffee products that contain creamer imported from Hong Kong
Danyang Day Bright’s Tasty Rice Crackers

Most of the candies and snacks found in Korea contain more melanine than legally allowed or considered safe, but the amount most adults would need to consume before getting sick is still quite large. Try to avoid products identified as tainted, but don’t freak out if you’ve eaten a fun size Snickers or have broken off a piece of that Kit Kat Bar.