On the bright side, they have excellent support forums where they answer even repeat questions without flaming someone for asking and posting their individual info rather than trying to muddle through answers given to others. As with any script, getting it to work on F2S seems to be a pain, but then again, that's why I just paid for my hosting and left F2S behind. A nice script that has a great BBS support group. Easy install and fast. Only a few lines to change and the install script will setup the rest, including the mysql tables.
Administrative panel is powerful, with different options and features than other boards.
I was using YaBB but PhpBB is faster. Its a UBB clone, but has better features. Very fast, and just getting faster. What makes it so great in my opinion is the speed and ease of installation. All you need is a mySQL database created then you run the install.