You people need to lighten up, eh? The symbol would mean sarcasm.

Also, please read

http://www.teamtechnology.co.uk/troll.htm

>>>Troll Characteristics

- a lack of buy-in to the list philosophy or values
- generally low level of activity, with sudden spurts of interaction - or perhaps a new persona that has strong opinions on controversial subjects
- a confusing mixture of friendly posts with a confrontational style of interaction
- the use of provocative language and sweeping generalisations about certain topics or categories of people
- a lack of in-depth understanding of the topic
- a lack of personal information
- a lack of a genuinely unique perspective on the topic
- a lack of humour
- will insist on having done no wrong, regardless of its actions
- restarting topics that have already been done
- use of language that encourages the dialogue to enter topics that are controversial and likely to upset some team members
- the use of attention-seeking gimmick (e.g.: "I was once exploited by an XYZ", "My life is so difficult")
- they follow up their own articles if the group doesn't respond to their posts