I think I may need to reword the landing page as it might not be completely clear how the site works. You can't give job offers to people who haven't applied for a job. Now, if pg applies for a job that you've listed, you'll probably find that a lot of people on your team follow him on Twitter - so his application will appear at the top of your list - but it won't list people who haven't seen your job listing and chosen to apply.