Webinars are an online presentation that helps in easily showcase your products and services to your target audience. It also enables the host to show their affiliate products in a more efficient and engaging way.
Try to make a convincing invitation to drive registration. Don't give them a reason to feel like your invitation is a corporate "fill in the blank" form. Target a specific segment and make a personal connection, so you can retain them longer.
Once you have recognized these leads, nurture them with follow up through various modes like emails, phone calls, e-newsletters, postal mails, etc.