When you post DD, not only does it show in your feed, but also in your profile and the $TICKER profile. In the case of $SNTX and this DD post by @CarterLOCKdIN, it is also identified and shown as a Catalyst.

This processflow was designed to encourage quality DD. Early alpha is the name of the game in the OTC. Surfacing ideas with quality DD that people are interested in converts into your Motion rating!

Over time, you wont have to guess who is a DD Master.