Here is an update:
The submissions have fallen victim to the consequences of suggesting a site multiple times to multiple categories... here it is:
A submission to category Recreation/Collecting/Pins was moved by a reviewing editor to category Shopping/Sports/Theme_Merchandise because the site sells more than just pins.
Then an editor looking to weed out duplicate suggestions of the same site, seeing more than one, decided to delete the one in the category you named.
So, the current status is - it is waiting for editorial review in the category
http://dmoz.org/Shopping/Sports/Theme_Merchandise . It may well get moved elsehwre before
As for the answer to your other question, looking at how that category is structured, once a site is found to be listed in that category, a subcat will be created.
Please note that I have not looked at the site, and am making no judgment on what the editors have done - I am merely giving you the status on your submission(s).
Thanks.