In every page title on tex.sx, it says

> TeX - LaTeX - Stack Exchange

These horizontal lines between the words are hyphens (Unicode point U+002D "Hyphen-minus"). In proper typesetting, **these should be dashes**, either En Dashes (U+02013) "–" or Em Dashes (U+02014) "—". As I would say we're a community who cares about such details and who thus ought to be a role model for them, **I'd appreciate to see that changed**.

The difference between these three characters is directly reflected in (La)TeX by three distinct inputs, `-` (Hyphen-minus), `--` (En Dash), and `---` (Em Dash). A similar issue has been discussed at http://meta.tex.stackexchange.com/questions/547/new-user-greeting, which now uses an Em Dash:

> Welcome to Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems — check out the FAQ!

I'm not a big fan of the Em Dash, I think it interrupts text flow too strongly; nonetheless we should use dashes uniformly. Has anybody seen any other _proper_ dashes around that would have to be adapted similarly? There are more pseudo-dashes (= Hyphen-Minuses) around here, e.g. after the title of a page, be it a question, "Frequently Asked Questions" or a user page:

> Putting a bar in the margin - TeX - LaTeX - Stack Exchange

So if you were asking me, I'd say we should use En Dashes on all occurrences of a dash (except one), with a regular space before and after it. Exception: It might make sense to use an Em Dash between a page title and the site title and En Dashes in the page title, like

> Putting a bar in the margin — _[= Em Dash]_ TeX – _[= En Dash]_ LaTeX – _[=En Dash]_ Stack Exchange

This would reflect that there's a bigger "content break" between the first part and the rest than there is between the _TeX_, _LaTeX_, and _Stack Exchange_, but I don't know if that is a typographic no-no according to the one or the other typography bible.

Related questions (this will help with keeping everything consistent and preventing misinformation):

 * [Correct hyphen to a dash in the "About" page](http://meta.tex.stackexchange.com/q/3291/14996)  [meta]
 * [How do I typeset the name of this site in (La)TeX?](http://tex.stackexchange.com/q/98721/14996)  [main]
 * [How do I properly cite TeX.SE for its help in typesetting?](http://meta.tex.stackexchange.com/q/3281/14996)  [meta]