If said schmoozing can get you press, investment or blogging attention then I'd say that's valuable. But sure, paying customers are the best! Edited to add: a

If said schmoozing can get you press, investment or blogging attention then I'd say that's valuable. But sure, paying customers are the best! Edited to add: a traditional powerpoint presentation may not be valuable, but if you can create a good video, slideshow or pdf and make it generate traffic to your website, that's valuable.