Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
i18n should be merged into internationalization and made a synonym.
They even have the same wiki but are still different tags. Merging them would be a good idea.
Good suggestion - i18n is the abbreviation for internationalization.
For additional reference on the term: http://www.i18nguy.com/origini18n.html and the obligatory wikipedia reference.