Aside from the equipment being supplied, they don't pay you for the review unfortunately. And after the review is posted it becomes their property which means if you have a separate blog with an expanded review you could keep that and you keep the copyright on your pictures.

Looking deeper into their reviews it seems like it is largely the mainstream equipment suppliers -- I don't see many reviews of the smaller mom & pop stores. That's something that really needs to be corrected because the smaller shops often produce better qualtiy stuff than the mainstream and more often are able to customize to the users needs -- JMHO.