This website is about posting information and sharing it. Layout is as attached. Details are as follows:
2 USER LEVELS:
1. Backend system to send email invitation to allow new members to sign up
2. Able to create Categories, Postings and also edit and delete them
1. Able to create Postings, Rate a Posting and Comment on a Posting
1. Each Posting can be shared on Facebook, Twitter, G+
The site can be built on PHP, HTML5 preferred. When the page refresh I hope that AJAX can be implemented. Please give options for the sake of budget.