How does Tagloud grade my Google Ads sources A through D for lead quality?

Tagloud grades every ad source from A to D by unifying your Google Ads click data with actual call outcomes from platforms like CallGrid or Ringba, measuring qualified conversions and revenue rather than just call volume. An 'A' grade means a source delivers high-value qualified leads at a low cost, while a 'D' grade flags sources wasting budget on spam or unqualified traffic, allowing you to instantly apply negative keywords or shift budget with one click.