1) Place comments in blogs and leave their link as a homepage
http://orderedlist.com/articles/don-t-complicate-the-solution
comment LISTENER
A] Picture shows you how to fill in the "Add comment" form

B] Posted comment. If you move your mouse over the author's name - his homepage appears in the status bar of your browser. If you click the authors name, you will get to his webpage.

2) Place comments in blogs and place link to my site/page inside comment.
http://scoop.kuro5hin.org/story/2006/2/10/122028/720 - (see comment of "hichnii")
http://www.labourhome.org/story/2007/3/13/42622/1773 - ("musredactor on a vacation")
http://groups.drupal.org/node/3394 - (comment with the words "Mp3Monsters")
3) Create social communities' IDs and leave my site/page links as homepages or placing URLs in "about me" fields.
a] http://svg.org/user/Randomm
Homepage: http://mp3worldz.com
b] http://odeo.com/profile/Xekcc/
His links placed after words: “Hello! My Blog: “
5) Placing links in digg.com articles:
http://digg.com/music/Musicovery_Music_Genre_Visualization_Tool_MUST_TRY
6) Spamming guest books:
http://ballroom.mit.edu/gallery/2005-MIT-Syl-Smooth/DSC_3757
(Welcome to MusicStore)
for example see: