:-S Direction Horizontal (tilted 90° to the left)
Shortcut Yahoo! Messenger
Rank ★ ★ ★  Common
Updated 2007
Description: The "S" represents wavey lips, which is used in animation to show worry.
>w< Direction Vertical (not tilted sideways)
Shortcut No
Rank ★ ★ ★  Common
Updated September 6, 2011
Description: The ">" and "<" symbols represent concerned eyes, while the "w" has a double-meaning. It represents a trouble expression and also stands for "worried."
Direction Vertical (not tilted sideways)
* requires multiple lines
Shortcut No
Rank ★ ☆ ☆  Uncommon
Updated November 27, 2010
Description: This person looks rather concerned about something. The "/" and "\" represent slanted eyebrows.
Emoticon Information from PC.net