| Annual cost per reading |
| Average cost per article |
| Average cost per subscription |
| Average dollars per email sent or delivered |
| Average order size |
| Average quarter-hour audience |
| Average revenue per subscription |
| Average time spent listening per user (day/week/month/year) |
| Bounce rate |
| Click to open rate (number of unique clicks/ number of unique opens) |
| Click-through rate |
| Click-through rate (CTR) |
| Conversion rate |
| Conversion rate (number of actions/unique click-throughs) |
| Conversion rates |
| Cost per broadcast hour |
| Cost per consumed (by viewers/listeners) hour |
| Cost per customer |
| Cost per lead, prospect, or referral |
| Cost per production hour |
| Cost per viewer/listener |
| Cost per visitor |
| Cost per action (CPA) |
| Cumulative audience sessions |
| Delivery rate (emails sent, bounces) |
| Gross ratings points |
| Life cycle cost per reading |
| Local content as a percentage of all content |
| Net subscribers (number of subscribers plus new subscribers) -(bounces + unsubscribes) |
| Number of broadcast hours per day/week/month/year |
| Number of or percentage of spam complaints |
| Number of orders, transactions, downloads, or actions |
| Open rate |
| Output per employee (unique first run broadcast hours by employee for each medium) |
| Pay per click (PPC) |
| Pay per lead (PPL) |
| Pay per sale (PPS) |
| Percentage of broadcast hours by genre (news/sports/entertainment, etc.) |
| Percentage of overhead (non-direct operating costs) against total expenditure |
| Percentage of orders, transactions, downloads, or actions of emails sent or delivered |
| Percentage unique clicks on a specific recurring Iink(s) |
| Referral rate (“send-to-a-friend”) |
| Site stickiness (number of pages visited per visit) |
| Subscriber retention (number of subscribers, bounces, unsubscribes/number of subscribers) |
| Total cost per subscription |
| Total listener hours (day/week/month/year) |
| Total revenue |
| Total revenue per subscription |
| Unique visitors (total number of unique visitors per day/week/month) |
| Unsubscribe rate |
| Utilization of production resources |
| Value per visitor |
| Viewers/listeners for each medium as a percentage of total population |
| Website actions (number of visits to a specific web page or pages) |
| Website traffic (total page impressions per day/week/month) |
