Some remarkable entries. I learnt a lot about SP through this competition and my eyes have been opened to the possibilities of SP.
I was puzzled by the judges' choices for some of the winners. Many demonstrate painstaking hand-painting, which might just as well have been done in Photoshop, rather than skillfully demonstrating the whole purpose of the software -- to create PBR materials for faking depth effects, faux geometry, luminance, opacity, reflectivity, metal surfaces, procedural textures, edge wear, etc.
Some of the winning entries looked liked they had been knocked out in a couple of hours using none of these techniques, slapping on just a few simple stock materials and also had uninspired concepts. Others obviousy deserved to be higher in the list of winners. I was expecting a degree of subjectivity, but these judges left me scratching my head.

A few suggestions on organising future competitions:
(1) Make the guidelines more clear. I noticed that many people had to ask in the forum for clarification on what constituted a "default material", as was stipulated in the guidelines. Apparently this did not refer specifically to those substances that come default with SP. Perhaps that accounts for the dull simplicity of some of the winners.
(2) Base the criteria for winning entries on how they can demonstrate the clever application of SP for the purpose it was designed, rather than just picking pretty artwork based on subjectivity. At the very least, indicate that these are not criteria you are seeking to see demonstrated; this is going to be the natural assumption of entrants in any SP competition.
(3) Allow entrants to submit a main IRay render in a pose at whatever angle they choose so they can show it off best, rather than insisting it be directly face on. I notice you don't even use this pose, anyway, for many of the images you posted on the winners page. While you did permit a secondary render to be submitted, it wasn't clear why. I would guess many entrants would have just attached low quality viewport snapshots. The angle of view is critical for normal maps/faux depth effects, for example.
(4) Make a decision on the winners by the deadline you set for the announcement -- this is simply being professional. Realistically, 1,200 entries is not a number you should not have anticipated. Personally, I was surprised there were so few entries.
(5) If you can't stick to your deadline, as you expected all entrants to do, at least post an update on the main competition page, rather than bury it somewhere in the forum.
Final grades:- Some of the winning entries: A+
- Software engineers at Allegorithmic: A+
- Judges and organisers of the competition: D- (must try harder).
