A profile creation system is provided to enable easy communications within virtual spaces. URLs and categories are stored in the category DB 13, such that the URLs and the categories are correlated to each other. Every time a user sends a URL on a conversation system such as the IRC, a category that corresponds to the URL is identified, and stored in the user data DB 14 such that the category is correlated to the user. By having valid periods in the entries of the user data DB 14, it is possible to create a profile that reflects a user's current status. It is also possible to include rating data in the user data DB 14, along with the category. By processing messages within a channel based on the rating data and user's category, it is possible to make communications within a virtual space easier and more effective.