K162: not a submarine movie.

Holy crap guys, wormholes are complicated!
So I've been in here with the alliance about a week or two now and it has been a rush of new information for me. For instance, I learned today what a K162 is and why it's important.

Wormholes come in several variety's, but in unknown space they can be broken down into 2 main categories. Inbound and outbound wormholes.
Wormhole systems will always have at least 1 "static" wormhole, that is a wormhole leading to a consistent location. The first thing that this "static" means is that you can in theory never be totally lost in wormhole space. As long as you have a probe launcher and at least 1 set of core scanning probes, you can slowly map your way back to known space. Class 1 and 2 wormholes typically lead back to high-security space, while class 3 to 6 usually lead to more wormholes. While its not a hard and fast rule, the lower the wormhole class the closer to safer space you are.
A side effect of this though is the K162. A static wormhole needs to lead out of a system and connect with another, be that in known space or wormhole space. However, until someone warps to the static entrance the exit will not form. That exit is a K162.
A K162 in your system means that someone has found a wormhole, warped to it, and possibly gone through it, all in the last 24 hours. If your in high-sec this might means that the wormhole your thinking of going through is probably inhabited. In a wormhole system it means you might have invaders! This is a problem since without a local channel to tell you who is in the system with you its impossible to know if you have an afk-cloaker in your home. Why is that a problem? Because there is no practical way to say, remove a covert-ops frigate if you don't know that they are there. You can look for evidence, but even if you know that someone has parked a cov-ops alt in your home there's still no way to remove them.
So finding a K162 in your wormhole is like having your doctor tell you:

"Hey! Its probably nothing, just a chest cold.
[beat]
...could also be cancer though."