Now I'll let rip:
One more thing, on some things I'm probably 'spuit 11' seeing how apparent those are..

*What the hell did you do to your mic? In the first few minutes the sound is way worse than it ever was (in my recollection)! My guess is that you're blowing up your mic half of the time, probably meaning you've got it too close to your mouth; can be slightly mitigated by turning down the gain. The part I don't get, is that the sound seems to morph at times, through bassy/muffled/trebbly/underwater; see 1:20-1:23 for instance. It could ofcourse be just some cheap mic.. *runs*
*While I'm at it, your webcam makes your skin look very pale; same with other light shades, they get flat, at times.
*runssomemore*
*NKRO over USB does not equate to 6KRO. A lot of boards do use an implementation that has that effect, but there are (supposedly) ways around that; even ways that don't 'emulate' being two HID-devices. See Soarer for the dirty.
^read this, from here: "In Feb 2010 Microsoft made a big splash breaking the 6KRO over USB barrier with the 17KRO Sidewinder X4 (press release). Now, in 2011, there are a few USB keyboards that support more than 6KRO, at least one of which is full NKRO (Noppoo Choc Mini, not compatible with OSX), and multiple hobbyist projects with full NKRO (that are compatible with OSX). "
*Clack. It comes from the keycap hitting the switch housing. It never touches the plate. Besides, if that were the case, there would be no clack on a PCB mounted board
**stopsrunningandturnsaround* Now realising you're probably using your webcam to record the sound.. Use what you got; I'm posting pics with bad lighting/focus, can hardly ask anything more of anyone else; especially considering the time and effort you are already expending on sharing this hobby and educating people on it.
*I couldn't hear the click of the blue... :/ Perhaps it's my being completely unfamiliar with the switch that makes me not recognize the click when I hear it, but I just didn't notice a click, only a 'clack' when the switch topped out.
*I would turn down the intro and outro just a slight tad more, seeing how both have quite sharp sounds in them, while your voice is more of a soothing bassy one; as it is, to me, in/out feel harsh-ish. Then again, I had turned up the volume a tad to make sure I could hear the switches & keys well; which made the moments your voice 'blew up the mic' slighly annoying/painful as well; so perhaps the intro/outro volumes are perfect already.

Thank you for asking for feedback at the end, I was getting quite hesitant to post this at all.. But I did put it in spoiler tags, just so you are sort of offered a choice.
Also, if you dislike my comments; and that goes for anyone directly adressed ofcourse, you can always tell me to stuff it. Or ask me to word it differently or whatever floats your boat; just as I am dumping my thoughts onto anybody else, I don't expect anything less from anyone other than me. Ofcourse, as I am hoping is apparent, I am trying to be at least somewhat considerate at all times; especially seeing how we are dealing with a medium that has only text, pictures and emoticons to transfer the wickedly extensive things that are our thoughts and emotions.

As a post-face, I just noticed I spent a good part of an hour on this post; so take that as saying I give a shit. Added because I feel some parts might still be harsh.
Post-post-face: looking over the post again quickly; it's not harsh at all! Damn I can be cautious at times.
To make that up, work on your "uhh's"!