Contacts fetcher PLEASE READ BEFORE BIDDING

I need a tool that will fetch / grab contacts from our users contact list on their Gmail / Yahoo / Live accounts. Please study the project before bidding; there have been changes on some APIs; if you've already done it last year, it doesn't mean you'll do it the same way now. Already 2 freelancers have been awarded on the project, and have not been able to accomplish it. Optionally, the tool will send invites through Facebook / LinkedIn / Twitter.