Hello Festus, welcome to ORMO! Hope you enjoy your time here and find lots of hints, tips and inspiration for making replays while you're aboard with us. Now, in regards to your questions:
1) There is a lower general activity in the ORMO forum than what one might expect from a large organisation due to many of our active members being frequent users of our IRC channel, #ormo. The channel provides a much quicker method of communication and idea/replay sharing with online members, meaning you can do everything from strike up a conversation to getting critique on your newest replays.
Conversely, it is pretty much just an online chat room with rapidly changing topics so you'll find lengthier, more meaningful threads (such as mass replay requests for videos, ORMO competition discussions, the duel thread etc) tend to inhabit the forum as opposed to threads about what you had for breakfast, what you were doing over the weekend or any other low content concepts.
2) I'm sure quite a few of our members have Skype, although we tend to use our IRC channel for ORMO-related matters (and often everything else too). If you don't have an IRC client, you can still visit the channel via the forum webchat client or Mibbit (as long as it isn't banned again).
3) That's a pretty vague question. What exactly do you want to know?
It's a punch that causes 3 dismemberments twice over the period of 4 frames. It's not a particularly fast punch, clocking in at 38.20 on the speedo on the frame before the first 3 dismemberments and 28.62 on the frame before the second 3. The reason it dismembered was due to careful fist placement and a bit of luck (this isn't supposed to be disrespectful to Larfen's skills, there's just always a certain luck factor when it comes to getting boomhits).
If there's anything else specifically, Larfen would probably be able to answer it.