[SP] sp_fr_lasers_01
I wouldn't worry about that. I believe most people understand there's not much point to playing a puzzle game once you've seen a walkthrough. People tend to go out of their way to not see spoilers(hence the spoiler tags being highly encouraged) until they've completed the map or feel that they've exhausted all possibilities and are truly stuck on a puzzle.
Err, that's exactly what my demo file is, a walkthrough on the Den. Do you want me to take it off the site?
@Adair: Ah well, nevermind, you convinced me just there. 
You really don't have to take it off. Besides, I didn't even know how to open it. I'm sure others do, but it's no big deal. Forget what I said, and thanks for the offer. 
EDIT: And oh yeah, looking back at your post, I seemed to have been okay with it from the start. I forgot, silly me.
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]
Ok, sorry ...now I put my videos in big spoilers always.
The preview picture reveals too much sometimes.
My walkthroughs should be useful ONLY for players who try and try and try and ..., but cannot solve the puzzle.
for example: post44772.html#p44772 
Everyone who watch walkthroughs before he plays or after a few minutes of attempts is boring and forgets what makes Portal so unique and interesting!
Made it to the den. One question though... is there anything to do in there?
Here's my proof that I've been there and it exists. I got there by normal means without using the no-clip option.
- TechOwl -
@BlumCoLe: Thanks for the effort. And I understand why you do this, I was just thinking out loud. No need to appologise. Still, I think the bigspoiler thing is a good idea, not just for my map, but for any video.
@Techowl:
Also, people, Version 1.1 of my map is out. Please vote and report any bugs to me, and blah,blah,blah....
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]
In the first room, there's a destruction prop right near the laser emitter. That keeps you from being able to keep a laser cube completely level with the ground and utterly annihilates any accurate aiming as a result. In the second room, with the way I did it you sort of needed to
OK I got the extra thing figured out in the den. Of course it's like "Well DUH" when you get it solved. Could have used more confetti though, and the good stuff, not the usual everyday kind. 
- TechOwl -
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Short, entertaining, and visually pleasing.
I felt that some of the portal helpers were a bit blatant (I think there are helpers used in some of the laser-involving Wheatley chambers that correct your aim from a distance but don't prevent you from placing a portal with precision if you want to), but other than that I have no qualms. Except that perhaps the choice of music was a bit plain to go with such detailed graphics.
@BOB74j: I don't really understand what solution you used.
@Techowl: I'll see what I can do. Maybe the robot disassembly machine could wade through some premium quality paper, just for you 
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@NuclearDuckie: Yeah, it's pretty hard to determine where people will want placement helpers, and how big the AOE should be. And I guess audio isn't my strongest power. I always forget to add that or do it near completion of a map (like I did now).
Maps in Development:
[spoiler]- Penrose 04 (on hold)[/spoiler]
Found a bug: Warning: Screenshot contains Spoilers!