Pandora has 250-million registered users

We are expecting Pandora’s monthly audience metrics at any time this week. In the meantime, the market-leading Internet radio service casually announced these tidbits:

• Pandora has 250-million registered users;
• Those users have created over six-billion custom Pandora stations.

In the keeping-numbers-straight department, “registered users” is different from “active users,” the latter being one of Pandora’s key audience metrics. Registered users comprise everyone who has created a log-in to Pandora’s service, which is required to create a personalized station and hear something. So, presumably, that 250-million number includes anyone who has kicked the tires even just once.

Pandora reported 73.4-million active users in January. So, about 30% of signups turn into active users.