I found the following website to be a very good source of general AF information. While most of you will find much of this information old hat, it is well presented, comprehensive, and should serve folks just finding out they have a fissure well.
It's at healthy.net
www.healthy.net/search/content/articles_wddty/anal_fissures3611.htm+%22anal+fissure%22&hl=en&ct=clnk&cd=19&gl=us" target="_blank" rel="nofollow">http://209.85.165.104/search?q=cache:7Ve0KeXWVb0J:www.healthy.net/search/content/articles_wddty/anal_fissures3611.htm+%22anal+fissure%22&hl=en&ct=clnk&cd=19&gl=us