I believe so. If you look at https://groups.google.com/forum/?fromgroups#!forum/brain-training you can see my FAQ is stickied.
Apparently only the group owner(s?) can do that. On a side note, "Display at the top", while easy to understand, was not anywhere close to a phrase I was looking for, and I definitely skipped right over it at least once.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.