CSS TEXT-JUSTIFY
Essa propriedade somente para o IE oferece um refinamento no valor "justificar" usado na text-align
propriedade. De fato, o valor "justificar" deve ser definido para que essa propriedade text-justify
tenha algum efeito.
text-justify
oferece um bom nível de controle de justificativa sobre o conteúdo incluído, permitindo uma variedade de modelos sofisticados de justificativa usados em diferentes sistemas de escrita de idiomas.
Exemplo
<p style="text-align: justify; text-justify: newspaper;">
This is “Newspaper” justified content
</p>
Valores possíveis
VALUE DESCRIPTION
---------------------- ---------------------------------------------------------------------
auto The browser will determine the appropriate justification algorithm
to use
distribute Justification is handled similarly to the “newspaper” value,
but this version is optimized for East Asian content
(especially the Thai language.)
In this justification method, the last line is not justified.
distribute-all-lines Behavior and intent for this value is the same as with the
“distribute” value, but the last line is also justified.
inter-cluster Justifies content that does not have any inter-word spacing
(such as with many East Asian languages.)
inter-ideograph Used for justifying blocks of ideographic content.
Justification is achieved by increasing or decreasing spacing
between ideographic characters and words as well.
inter-word Justification is achieved by increasing the spacing between words.
It is the quickest method of justification and does not justify
the last line of a content block.
newspaper Spacing between letters and words are increased or decreased
as necessary.
A referência do IE diz que "é a forma mais sofisticada de justificação para os alfabetos latinos".
Fonte: http://www.css3.com/css-text-justify/
Espero que isto ajude!