Hmm, have to think about this. Maybe the simple solution is not to have the site automatically upvote our own submissions nor allow us to vote on them manually. I don't think we should weight the votes based on content type though. Some projects may take less effort than skins and vise versa. Texture packs & Mods have a huge range within themselves. For that matter, projects and skins do too. For example, a mod might add 1 new craftable item, while another may add 10 new mobs and a new game mode. The general idea is that over time, particular contributions will attract more views, downloads & upvotes than others.