Which is better while talking about Stack Exchange network : site.sx or site.se ?

site.se, because it also works as magic link

> [something.se] – link to something.stackexchange.com, if that site exists. Link text is the site name. Use Ask Ubuntu for Ask Ubuntu. [meta.something.se] links to the meta site.

Meta Stack Exchange

@AndrewT. Thanks for such helpful information.

It's working [meta.se] is expanding to Meta Stack Exchange!

@AndrewT. By the way, Feel free to use this room for the discussion related to the topic of room and inform others also!

good-bye!