The same thing happened to me after a single (and entirely polite and reasonable) post. Yet less than a month ago, one of their mods started a thread called 2014 – LTLF’s Year of Niceness in which, among other things, he says that "Forums are places where you can read different opinions – if you aren’t interested in hearing what other people think, don’t go on them!" and "Away fans are welcome on LTLF providing they can abide by the same rules as everyone else. If you can’t be polite to a sensible visiting supporter then it will be you who is unwelcome here, not them."
I wrote and asked on what grounds I was banned, and didn't get the courtesy of a reply. Ignorant twats.