Marketplace Script Development

Hi we need an experienced developer to code a marketplace script for us. Some what similar to backpage/craigslist but with additional features that we will discuss in PM. If you are not experienced with how sites like craigslist work, please do not bid. Here is a brief overview of some of the advanced work that will need to be done on the script. -Email forwarding & spam screening via php -Scalability (ec2 support possibly) -Amazon affiliate api experience (regarding ISBN lookups for books) -Facebook connect -Front end & Back end administration/user panel -Script documentation Please send us some sample applications you have developed in the past and what technologies/framework you used to develop them. We would prefer for this to be done from scratch, but if you have already done something similar please let us know and pm a sample link. More detailed project description will be provided via pm. Thanks!