Web Forums or Internet Forums provide a space for users to share, discuss and request information. Web Forums are sources of huge amount of structured information that is rapidly changing. So crawling Web Forums requires special softwares. A Generic Deep Web Crawler or a Focused Crawler cannot be used for this purpose. In this paper, we propose an effective Web Crawler especially for Internet Forums. This Forum Crawler overcomes the drawbacks of many of the existing Forum Crawlers. It has the ability to detect the Entry URL (Uniform Resource Locator) of a Forum site, given any page of it. Crawling process starting from Entry URL increases the coverage. Different URLs in the Web Forums are classified into four categories. The entire crawling process is divided into a learning part and an online crawling part. Learning part will create regular expressions based on URLs and crawling part actually crawls the Web pages.

Forum Crawling; URL Type; Page Classification; Crawling Strategy; Javascript-based URLs

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