SC Popup Subscriber Form is the new jQuery based Popup Feedburner Subscriber Form for WordPress site owners. Using this new plugin you can instantly enable/disable jQuery Popup Subscriber Form from your WordPress admin panel. All you will be needing to do is set feedburner feed id from dashboard and add your own heading and description to appear on Popup form.
Installation & Usage: Install and activate SC Popup Subscriber Form. After activation visit your admin area Dashboard -> Settings -> SC Popup Subscriber Form and tick Enable checkbox, type Feed URi, Heading and Detail.