Hoffman (1998) found that the important stuff first before using first checks the user's website is a reliable site, that the user wants to use that site must have a reference source reliable information and exist.
Hoffman (1998) found that the important thing first before the user can check before using the site is the credibility of the website that the user wants to use the site to have the reference data reliability. and physical
Hoffman (1998) showed that the first thing before the user to check before using the site is the credibility of the site, the user would like to use this web site must have a reliable reference data and real.