Well, I can't see the image yet =P
But that's a nice one. Noclips are classic.
I just don't know any of em right now... the easy ones get fixed, obviously.
Water are just unwalkable spots, nothing different. it seems that someone tryd to make people think there is a real water walking, but probally just used the fixed forced movement and made people believe it.
No its not that forced movement mattcoady had freewalk on it... Well i like glitches that you can bring to citys more if you understand me