Rather than a grafting of WikiWiki and WebLog tools, it is better seen as a KnowledgeManagement? tool that manages "snips" in a wiki-ish manner. Besides being reader-edited, snips may be commented, have files attached, or be associated with a date. The date association enables creation of blogs.
True to its knowledge management roots, SnipSnap is simple to deploy and fairly approachable to less technical users.