Click-through rate (CTR) is the number of users who click on a specific link out of the total users who view a page, email, or advertisement.mail click-through rate is expressed as a percentage, and calculated by dividing the number of click throughs by the number of tracked messages delivered. Most email marketers use this metrics along with open rate, bounce rate and other metrics, to understand the effectiveness and success of their email campaign.
Moonbat is a pejorative political epithet used in United States politics, referring to liberals, progressives, or leftists.
Noun. 1. trackball-an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen; a trackball is essentially an upside-down mouse. electronic device-a device that accomplishes its purpose electronically.Translations.. trackball-an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen; a trackball is essentially an upside-down mouse. electronic device-a device that accomplishes its purpose electronically. Translations.