Ask HN: The redesign of my startup, please review it.

A couple weeks ago I asked HN to give me feedbacks on my website. I received great feedbacks and did a revision of my website, changing the user interface and build a community forum around it. Well the idea of my startup is very simple but I believe very meaningful. I'm trying to connect local buyers and sellers together via videos instead of photos. Giving users and sellers a better way to showcase their second hand products. Right now we're focusing on users acquisition and marketing but kind of stuck, meaning no growth. We're getting about 500 visits/day and around 5-10 people register/day but not many people are uploading videos. We want to get users more involved in the community and eventually list their used stuff with us. As of now I'm bootstrapping my startup where capital is very limited.

I'm thinking of 1. reaching out to bloggers and get some PR to increase more traffic to the website. 2. Then hire some people to build a mobile app so users can upload their stuff easier and faster. 3. Run some contests to motivate them to sell their unwanted stuff lying around their homes. 4. Contact local used car dealers, furniture stores, and yard sale associations offering people to list their products on the website for free.

Which one of these should I do first or not do at all? This is my first startup and I know I have alot to learn especially with online marketing. Please review my startup and feel free to offer any feedbacks or criticisms. Please advise me on some marketing strategies for my startup as well.

Thanks,

Leon http://www.123exchanges.com