Loremipsum is a project mainly written in Vim Script, it's free.
A dummy text generator
This is a mirror of http://www.vim.org/scripts/script.php?script_id=2289
Insert a dummy text of a certain length. Actually, the text isn't generated but selected from some text. By default, the following text is used, which is included in the archive: http://www.lorem-ipsum-dolor-sit-amet.com/lorem-ipsum-dolor-sit-amet.html
NOTE: The webpage didn't contain any copyright message but there is a statement that one is allowed to paste the text into "your document". I thus assume it's ok to include it in the archive. If not, please let me know.
Command: :Loremipsum[!] [WORDCOUNT] [PARAGRAPH_TEMPLATE] [PREFIX POSTFIX] Insert some random text.
:Loreplace [REPLACEMENT] [PREFIX] [POSTFIX] Replace the random text with something else or simply remove it.