I didn't know SmallFry personally, but the guy was all over Geekhack.
Reading this only confirms how implicated he was and how GH was important to him.
In the same way, it means that many people here, and the community in itself, was very important to him.
From what I understand, this key was only the symbol to remind us that GH is such a fun place because of the people making it a fun place.
The best we can do is make sure it stays like that!