Well you can post videos here and link to them in the forums  Browse Gallery | Renderosity

Or you can try and make the movie in WebX format which one of the vendors has done for his store picture and it is animated scene with a lot of his products.  Normally you have to use a static image

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13, 14