User language templates aid multilingual communication by making it easier to contact someone who speaks a certain language. The idea originated on the Wikimedia Commons and has also been implemented on Wikipedia and some of the other wikis to varying extents. To participate, you can add the {{Babel}} template to your user page as follows:
Start off with {{Babel|
Next add one of the following codes for each language you speak or understand, separated by |, where xx is the Memory Alpha code for the language. The general usage of each code level is as follows:
xx-0 if you don't understand the language at all. Don't use it for every language you don't know; only use it when there is some reason why you might be expected to know it, or if you don't know it but have an interest in learning it.
xx-1 for basic ability - enough to understand written material or simple questions in this language.
xx-2 for intermediate ability - enough for editing or discussions.
xx-3 for advanced level - though you can write in this language with no problem, some small errors might occur.
xx-4 for "near-native" level - although it's not your first language from birth, your ability is something like that of a native speaker.
xx (no hyphen or number) for native speakers who use a language every day and have a perfect grasp of it, including colloquialisms.
So, for example, {{Babel|en|de-1}} would indicate a native speaker of English with basic knowledge of German. {{Babel|en|sv-4|de-3|fr-2|es-1|nl-0}} would indicate a native speaker of the English language with an almost-native knowledge of Swedish, advanced knowledge of German, an intermediate knowledge of French, a basic knowledge of Spanish and little or no knowledge of Dutch (but a desire to learn!).
These templates also add you to the category associated with that language.
To find someone who speaks a particular language, see Archivists by language, and follow the links. The two and three letter codes are taken from ISO 639.
Alternatives[]
As an alternative, you can add stand-alone language templates to your user page.
Format: {{User xx-1}}{{User yy-1}}{{User zz-1}}
Another alternative is to simply add the language categories to your user page directly. This will add your user page to the appropriate language categories. The category tags can go anywhere on the user page, but are typically added to the end of the page.