Creso, mellonamin. Ha' chenmoH Hol ghoj (Welcome, my friend. Learn made up languages.)

In case you were wondering, the first sentence is Elvish and the second is Klingon. This is an introduction to fictional languages. For each one, I'll translate the blog's title "Vortex of Deduction". Sadly, most fictional languages don't have the words "vortex" or "deduction", so an approximate translation must be used. Also note that for runes and other picture-based languages, no meaning is provided as the letters themselves are translated and not the words.

Ancient Language

Fandom: Eragon series (Christopher Paolini)

Description: the oldest language, from which all the other languages of A developed. Used for casting spells or just talking normally.

Who uses it: elves or anyone casting a spell (except if they are talented enough to cast a spell silently)

Translation: ristvak'hugin

Meaning: place of thought/knowledge

Dwarvish 

Fandom: Lord of the Rings (J.R.R. Tolkien)

Description: the language of the dwarves of Middle Earth

Who uses it: dwarves

Translation: skilagat 

Meaning: place of learn

Elvish 

Fandom: Lord of the Rings (J.R.R. Tolkien) 

Description: the language of the elves of Middle Earth. Sometimes used for casting spells. 

Who uses it: elves, wizards

Translation: sintamen' 

Meaning: place of knowledge

Feanorian Letters

Fandom: Lord of the Rings (J.R.R. Tolkien)

Description: runes used by the elves of Middle Earth. Also used to write spells

Who uses it: elves, wizards

Translation:

Gallifreyan

Fandom: Doctor Who

Description: the language of the Time Lords, an ancient race of time-traveling aliens. This is the only language the TARDIS does not translate.

Who uses it: Time Lords

Translation:

Huttese

Fandom: Star Wars

Description: the language of the hutts

Who uses it: the Hutts, an alien species (e.g., Jabba the Hutt)

Translation: Tinka pa 

Meaning: think place

Hobbit Runes
Fandom: Lord of the Rings (J.R.R. Tolkien)
Description: runes used by the hobbits
Who uses it: hobbits
Translation:

Klingon
Fandom: Star Trek
Description: language of the Klingons, an alien species
Who uses it: Klingons
Translation: daq sov
Meaning: place of knowledge

Lord of the Rings Runes

Fandom: Lord of the Rings (J.R.R. Tolkien)

Description: generic runes in Lord of the Rings

Who uses it: anyone in Middle Earth

Translation:

Parseltongue

Fandom: Harry Potter (J.K. Rowling)

Description: the language of snakes. Only a few people can speak this.

Who uses it: parselmouths (people who can speak it), who are usually evil witches/wizards who go to Slytherin (Harry being the notable exception)

Translation: I can't seem to embed the audio here, but if you go to http://www.theparselmouth.com/ and type in "vortex of deduction" to be translated, you can hear what it sounds like.

Because this is totally awesome, I have also made this a page, which you can visit here.