It's actually the default group from the ancient version of UBB.threads in use at MFIF until the spring of 2008. The default smilies that ship with newer versions of the software, including the one we're running now, are very small, and the expressions are difficult to make out; we felt that the older ones were actually more useful because it was a lot easier to tell what they were intended to convey.
As for the names: hover over one of the graphics; after a moment, a "tool tip" box should appear containing the name of the smiley.
