# Useful Examples

- [Feedback form (polls)](/useful-examples/feedback-form-polls.md)
- [Tracking 404 Pages](/useful-examples/tracking-404-pages.md)
- [Tracking UTM parameters](/useful-examples/tracking-utm-parameters.md): Example of reading and storing URL query parameters for each session.
- [Tracking Google Ads GCLID](/useful-examples/tracking-google-ads-gclid.md)
- [Storing user device types](/useful-examples/storing-user-device-types.md): Example of storing custom device type data using tags.
- [Track video playback](/useful-examples/track-video-playback.md)