Social media is intended for conversations, not monologues. So rather than making it all about you and trying to get attention, make it about them: see where you can be useful and offer up advice where it is needed, without asking for anything in return. That is how you build real relationships with your leads, and your efforts will be rewarded with their loyalty.
Webinars can actually convert the participants into potential buyers if you provide them with satisfying information and solutions. Online discussions/Webinars are the best opportunities for you to share the vision of your company with your potential customers and also know about the people on which the future of your company depends on. You will soon realize that there is a huge difference when it comes to writing about your company and actually talking about it.