This small module provides a field formatter that displays a field as a link whose URL consists of a base path combined with the value of the field.
For example, if the value in your text field is 'foo', then you can have this output as a link to 'my/base/path/foo'.
This is intended for use with a View that has an argument on this particular field. This means that your field becomes a link to a list of 'more things with this value'. This replicates the functionality of Drupal core's Profile module, but obviously can now be applied to any field on any entity.