Just to add to Mr Bunkers comments, when you log into any 'chat forum' be it Pprune, BASSA or Crew Forum the owners are required to log your IP address with each post you make.
Thus the nightmare scenario of being called forward for comments made on an 'anonymous' forum are all too real as the ISP's are required by law to relinquish the IP address holders account details to the police.
This info is not pointing at anyone just an addition to MrBunkers very good advice above.
Tread carefully!