We can learn more about our users, and use this information to personalize our site without gathering too much information or using it in an irresponsible manner.

mod_geoip will enable us to assume a user's location. This can be used to present a country-specific site, maybe even translated to the user's presumed language. Of course we should use this only as a default setting and allow our users to override this; otherwise we will invariably end up angering some of them.

Also the module could be used to block specific content for some countries, for example, to comply with national takedown notices.

mod_accesslog can be configured to put the information we want into the access.log while keeping the information we don't want from clogging our disk space.

mod_usertrack allows us to set unique random cookies in an easy standardized way. While we don't have to care about the content of the cookies any more, we should still use them with care, to avoid opening security holes or enraging...