B2B Sales Leads for Small Businesses. Top Up Your Funnel® generates highly targeted, quality B2B leads for small businesses. We deliver you highly targeted quality leads. Using years of experience managing sales programs for small and large enterprises, Top Up Your Funnel® has designed a seamless and integrated process for generating high quality, early stage [top of the funnel] sales leads, targetting key decision makers in companies based on your ideal customer criteria. Leads are scored against the criteria and you only pay for leads that match.