GSoC is wonderful etc, etc, however most of us probably don't need to be reading all of the introduction posts that will be coming in. If you don't want to see all of the posts in the GSoC category in your "feed", you can go to the category page:
then on the little bell icon
, select "muted":
Now those posts won't show up in your "Latest" feed. Later in the year once things are rolling, you may want to set it back to normal or Watching First Post.