Why are my character and word counts off?

Why are my character and word counts off?

References

Reference NO 1

http://stackoverflow.com/questions/15192055/why-are-my-character-and-word-counts-off

Reference NO 2

http://www.indiadrummond.com/2013/01/21/how-i-easily-doubled-my-daily-word-count/

Reference NO 3

http://nanowrimo.org/en/forums/usa-pennsylvania-pittsburgh/threads/86836

Reference NO 4

http://thewritepractice.com/too-short/

Reference NO 5

http://ckeditor.com/addon/wordcount

Reference NO 6

http://wiki.openoffice.org/wiki/Documentation/FAQ/Writer/FormattingPagesAndDocuments/How_do_I_perform_a_word_count_of_my_document%3F

Reference NO 7

http://answers.microsoft.com/message/87dbe3bd-3dd5-45e3-89dd-9b1b603777a9?threadId=4fe21fc6-d588-4497-8a12-52c25dd9c38c

Reference NO 8

http://writetodone.com/2008/09/26/trouble-sticking-to-your-word-count-try-these-editing-tricks/