The list of my topics are topics that I am concerned about. I could have created them or be assigned to them. This display is a convenient display to see what I need to follow on any number of projects. If you are often working on multiple projects, this display is for you!
To go to this page click on the user icon on top right of the screen, or navigate to topics tab of your profile page.
The display is split in 2 tabs : the topic you have created and the topic your are assigned to.
A link to the project the topic belong to is available on each topic list item. Indeed topics here are not displayed grouped by project, but ordered by the more recently updated first.