You'd probably have better luck in the Slackware forum, but I don't mind answering some questions.
1.) It does, I believe it comes with both a 2.4.x and a 2.6.x kernel.
2.) It's binary based, but the package management system isn't as in depth as apt-get.
3.) The package management system is very basic, slapt-get and swaret try and act like apt-get, but I've had nothing but trouble with them. When I use Slackware, I generally compile everything from source, and install it with Checkinstall so I can easily remove the package or update it.
4.) The Slackware community is easily one of the finest communities out there. You'll see a saying on distrowatch, if you have a problem with Linux (generally regardless of distribution) a Slackware user can/will help.
5.) Most of the configuration will be done by editing config files. Slackware is arguably the closest distro to straight up UNIX out there.
6.) I love it, and I will always use it for a server, hands down. I'm running both Debian Unstable and Slackware 10.2 on this machine, and I find I'm using Debian more and more, since it's so easy to keep it up to date. When it comes to a server though, stability is the top priority, and I'd whole heartedly recommend Slackware for just that application.
7.) Straight-up CLI. If you're familiar with fdisk, you'll be fine. It's a lot like Debians with a more difficult (read: more powerful :P) disk partitioner, rather than Debian's built in tool. The Slackware install is a piece of cake.
Hope that answered your questions!