The Runic Alphabet is an alphabet of letters known as runes. The Runic Alphabet was thought to be created by the Germanic people in the first or second century.
It was used mainly in the British Isles and Scandinavia.
Today, runes are mostly used in divination.

The Blank Rune was supposedly introduced by inaccurate information in the Book of Runes by Ralph Bum.
The Blank Rune, also known as an "Odin Rune" or "Wyrd Rune", does not really have a purpose in the Runic Alphabet.
When you purchase a rune set that has the blank rune, they generally tell you to take it aside and keep it in case you lose another rune piece.
Most people will tell you not to use the blank rune in rune casting.

There is no historical evidence that says anyone hundreds of years ago ever used a blank rune. A rune is a symbol, not what the symbol is on, so how can there be a blank rune?
"Have you ever seen a blank symbol? Of course not, that's an oxymoron."

I, personally, do not think that the blank rune exists.


Blank Rune

I don't think that the blank rune exist because that mean there is no rune at all -because it's empty aka blank. So I don't think a blank rune exist because it actually doesn't mean anything.
It like saying a invisible letter exisits. If you can't see it (like it's blank) then it's not there

like one of j.d. salinger's story (teddy) says:

Quote:

"It's interesting that I know about them being there. If I hadn't seen them, then I wouldn't know they were there, and if I didn't know they were there, I wouldn't be able to say that they even exist.

Even though microrganisms are so small that you can't see it, scientist know and kind of 'saw' them on microscope and they have proof they are there. But a blank rune is well..blank there is no proof that anything's there because it's 'blank' or invisible.

And the website below explains why the Blank Rune does not exisit

Here's a quote from it:

Quote:

There is no historical evidence that runemasters of old ever used a blank rune. It's self-evident because a rune is a symbol, not the token that carries it. Have you ever seen a blank symbol? Of course not

http://sunnyway.com/runes/blank_rune.html

Make sure to state your opinion – does it exist or not?

Certainly the rune EXISTS - people use it. I think the question is more geared toward its accuracy, and I fully believe in the Blank Rune. Maybe it wasn't an original member of the 24 runes, but as times progress, so do ideals and beliefs. The idea of Karma has come much more into popular belief, so a rune representing the idea of Karma should as well. Just because the rune has no particularly assigned symbol, all of the runes represent an idea. An idea is not a tangible thing. The fact that the "Blank Rune" is blank represents that is it different from other runes that do have a symbol. The Blank Rune is represented by, well, its blankness.

What is the “Blank Rune?”
The black rune represents the 25th rune, more recently added to the original twenty-four. Known sometimes as "wyrd" it represents trust in yourself and in life itself, acceptance your past, present and future, and being open all possibilities as influences are out of your control. It indicates an acceptance and respect for fate.

What is its significance within the runic alphabet?
It represents a sense of accepting life as it comes and living your life knowing that your actions will come back to you in one way or another.

What are different theories?
Some theories push the idea that the stone represents the collection of three Norn goddesses or fates of Teutonic mythology, Urd, Verdandi, and Skuld, who represent the three aspects of time-past, present, and future. It may at one point have belonged to Pertho and came about with runic modifications made by the saxons.

Works Cited
"BewitchingWays.Com." The Meaning of the Blank Rune. 2007. 23 Aug. 2007 <http://www.bewitchingways.com/runes/blank.htm>.

"The Rune School." The Rune School: Topics - Blank Rune. 2005. 22 Aug. 2007 <http://www.runeschool.org/topics/rs_t_blank.htm>.

My opinion:
The Blank Rune wasn't used in history, but is real and used in today's time.


Runes are thought of as mysterious, as secrets, and the Blank Rune is the biggest secret of all-the secret of Fate. It stands apart from the rest of the runes, even as it has become a part of the divination system.

The "Blank Rune" or "Odin Rune" has no symbol. I don't think that anyone would recognize a blank stone or wooden disc as a rune, because runes by definition are symbols or glyphs of some kind. The Blank Rune is also called Wyrd (pronounced "weird"), which is the collective name given to the Norns, the three goddesses or fates of Teutonic mythology. Their individual names are Urd, Verdandi, and Skuld; they represent the three aspects of time-past, present, and future. The Norns rule over the karma that each person has accrued during his or her incarnation.

Wyrd indicates fate andfatefulness. Events that are fated or inevitable. They cannot be evaded, no matter what you do. Those events indicated in the reading may be good or bad, and the other runes in the cast will determine the nature of the event. When the rune falls in a prominent position, it indicates that if a particular step or choice is taken, life will never be the same again. Again, this could be good or bad. The rune or runes in the result position will often guide the person as to what move he or she should make.

Finally, the Blank Rune in a reading can indicate anything that must be kept secret for the good of the person. It can signify things relating to others that the person has no business knowing. Wyrd is often prominent in rune casts where the person is asking for information that is none of his business.





Source:
http://www.bewitchingways.com/runes/blank.htm