The link in msansing's post is to the main contests page but with the filter set to show only open contests.

The closing dates for entries to the individual contests no longer appear on the contest pages, but I do recall that they specify a specific time, usually late morning, as well as the date - so you probably missed the deadline by a few hours.

( Note o Renderosity: think it would have neen better to have separate links for each contest linking directly to the relevant pages - wlith your recent survey in mind, dud links from the main contest announcement don't exactly help with engagement and inclusion)

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The 3Dcheapskate* occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.

*also available in ShareCG, DAZ, and HiveWire3D flavours (the DeviantArt and CGBytes flavour have been discontinued).