Trackle, a personal alerts site similar to notify.me, is flipping their product offering inside out and tweaking it to fit the other half of the Web — content publishers.

Launching today, Trackle It will give website owners the ability to offer viewers custom content subscription options. The add-on is designed to let visitors subscribe to all types of new content via email or SMS, and then share it through their social network of choice.

By adding Trackle It to your site, the idea is that you’ll be able to serve your audience with the subscriptions options of their choice. So whatever your content is, be it new products, travel guides, or content-rich blog posts, you can better serve the user base that wants to be notified of updates instantly via the medium of their choice.

Implementation appears to be pretty painless, and is basically determined by the quantity of customization, data being tracked, and statistics desired. But basically it’s as simple as embedding a “Trackle this” button within your site’s code.

Trackle It is an obvious idea — on-demand content based on user preference — that we’ve yet to see implemented really well. We’re certainly intrigued by their offering, but its success will depend upon the quantity and quality of publishers implementing the feature, plus user adoption of Trackle.