You can register to My HSL at hsl.fi. The service includes the familiar Disruption Info. Another popular service, My departures is available in My Journey Planner in which you can save your own stops and route searches.
For the time being, you need to login to My HSL and My Journey Planner separately, i.e. you need a username and password for both of them. We are currently looking at the possibility of using the services with one username and we will try to introduce single sign-on during this year.
My HSL is first released as a beta version and the service is further developed on the basis of user experiences and feedback.