First off, the tags listed in the FAQ, are only some of those that we support. Can be good to know.
Also, the answer to the question is both yes and no. Some tags are case sensitive, some are not. The (FTF) for example, is case sensititive, while {*FTF*} is not (the most common one in Sweden). {FTF} and [FTF] are not case sensitive either. Generally, those that has less likelihood to be written in a non ftf log aren't case sensitive.