Hopefully these 2 older posts help somewhat.
Some related FAQ stuff:
You can turn off the alerts with ease. Go down to where is says Tracking or Watching and change it to normal.How do I unsubscribe from a thread?
Both for a Computer & Mobile should be the same.There is a Watching or Tracking button on the page to the left side below the last post. Click that and choose Normal
Might be more here: Opinions about forums on the SDMB - #29 by What_Exit
& here: