  Virtual world technologies provide new and immersive space for learning,
training, and education. They are enabled by the content creation and content
sharing function for allowing users to create and interoperate various learning
objects. Unfortunately, virtual world content sharing based on persistent
virtual world content storage, to the best of our knowledge, does not exist. In
this paper, we address this problem by proposing a content sharing scheme based
on Virtual Net, a virtual world persistency framework. For efficient content
retrieval, three strategies have been proposed to reduce communication overhead
and content load delay.By integrating these strategies, a virtual world content
search and retrieval algorithm has been devised. The experiment results verify
the effectiveness of the algorithm.
