The approach basically keeps a list of queries which web users
enter to the system. These favourite terms will be used to assist
users in later round. The suggestion will change depended
on current favourite queries or keywords to search. Their
approach do not consider the detail and context of documents
in collection. Some suggested terms may not be able to
find their relevant documents. However, the approach may
appropriate with web collection. Web users mostly interest on
hot issues rather than documents existing in the collection.