I am the person who posted on the urban75 community thread about the Jo Yeates case, and gave my thoughts on this set of threads about the same case.
Although I am a bit older than Jo, this case stuck in my mind because I went to my work's Christmas do that Friday, and waved my workmates goodbye as I walked to a nearby station to get home, roughly around the same time as Jo went to the pub with her workmates.
I came across the websleuths site via a web search as I was trying to work out the facts of the case too, and I posted what I did because I was genuinely horrified at some of the things being posted on this thread set. It was not my intention to cause offence - and please accept my apologies if I have offended or upset anyone in any way. It is clear that there is a genuine wish to assist in a non-professional manner in this case.
To my mind, this is a difficult and frustrating case due to the lack of progress (perceived or otherwise) of the police and the 'drip feeding' of 'information' - I do not think much of this information is reliable or factual - from the media at large. Consequently, a vacuum has been created and speculation has immediately started to fill that gap.
My concerns lie with the nature of some of what has been posted.
Please note this is just my opinion. In particular, I feel that there has been a lot of things said about certain people close to the case - such as GR and JS - that is quite hurtful. For example, right from early on in the investigation, the the police stated that GR was not a suspect:
http://www.bbc.co.uk/news/uk-england-bristol-12084756
but this has been consistently ignored as a fact by the majority of people. So we have a young man whose girlfriend has been murdered, probably feeling as if his world has ended, and posts on a message board are saying some really quite hurtful things about him (jealousy, rage, rocky relationship, he killed her etc). Some of the speculation, also in my mind, has a somewhat almost jovial air about them, and it is as if this poor woman's murder has become a real-life game of cluedo.
There are some excellent posts on this threads, for example the ones about the location of the body. I found them very insightful. However, I think a duty of care is owed to the family and the victim's loved ones, and the investigation, and theories must be mindful of the facts, however few there are. My impressions of this site - the Jonbenet Ramsay work for example - were that a lot of careful and thoughtful investigation does take place, especially on cold cases. It is the open and virtually unfettered speculations on live threads that worry me, especially in these litigious times.
As an aside, posters on urban75 are also intelligent and thoughtful, and yes, there is bickering and disagreements, but the web site is moderated well and disruptive posters are banned. Legal cases are often discussed, but once arrests have been made no further discussions are allowed to avoid prejudicing them.
Finally, I'm not sure I'll be able to contribute much to this thread whilst there are so few facts available, but I wanted to join to explain my postings on urban75.