an idea for the next version from the crawler:
an external language file in an second folder as the crawler folder. in the configuration menue everyone can select the used language. as first by downloading the script there is the universal english language file included. When every one want to translate the interface in his language, he copy the language file (example english.php to german.php) and translate them. As second he can spend the community his translation file for use and you can integrate them in your next updates.
it was only an idea for next versions ...