# Profiles

IDOL Server automatically creates interest and expertise profiles for users, in real time.

You can create interest profiles by tracking the content that a user views and extracting a conceptual understanding of it. IDOL Server then uses this understanding to keep user interest profiles up to date. You can use interest profiles to:

- Target information to users.

- Recommend content to users.

- Alert users to the existence of content.

- Put users in touch with other users who have similar interests.

You can create expertise profiles by tracking the content that a user creates and extracting a conceptual understanding of it. IDOL Server uses this understanding to keep user expertise profiles up to date. You can use expertise profiles to trace users who are experts in particular subject areas.

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