Trading members with trade with caution

[Cascade]

I want to buy gold off seller "bus369" but under his name it says "trade with caution" What exactly does this mean? Should I still trust him? And how do people end up with this statement on their profile?

 

You should most likely use a middleman to make sure your trade is safe, I advise against going first to people with a Trade With Caution, or TWC, rank.

You can find a middleman here:

http://www.sythe.org/middleman-forums/

 

[Cascade]

Never knew there were trusted middlemans on this forum and thanks for the tips