not sure if happy is the right word, but there is a jack the ripper forum i go on occasionally, usually to see if any interesting new books are in the pipeline. Most of the posters there (like here) are far more knowledgeable than me, so I don't comment very much at all. However, I started posting reviews of each book I read shortly after reading it in one particular section, as I can't really comment on most other things, owing to the detailed knowledge so many people have.
The proprietor of the site has now renamed that section after me! I now have my own little section of the internet (yay!) sadly it's all about a serial killer...