The first one is subjective, but if she doesn't look like her photos then that's a negative. The other two, definitely reasons to write a negative, in light of your recent unfortunate robbing experience.
A good idea for a thread, but a little flawed in my opinion. We have a review board and most walk for a legitimate reason which should result in a neg to warn others - no matter how trivial that reason is! On balance, if the WG in question is generally a good provider, the positives would outweigh the neg and it can be reasonably assumed that the punter who posted the neg may be a little too fussy or provide unbalanced reports.
As a general thread, titled; reasons for walking would probably get a better response - without having to post a link to the WG.
I do get where you are coming from but do disagree slightly
My recent experience is what brought this idea about
The woman in question had never been formally reviewed on this site. I reckon there have been punters who have booked to see her but got spooked at the last minute and decided not to even walk up to the door and just make a U Turn. They probably would not make a formal negative review because nothing actually happened but if they just made a mention of the reasons they walked in the general board and the next week another punter did the same etc. etc. even though no formal negative review would have been done at this point based on punters giving the reason they decided to back track it would make others considering to book the girl more cautious
1. Sometimes in the flesh you find someone less attractive than you did in photos. This may not be because she is being deceptive with her photos but simply because now you've seen her in the flesh you didnt find her attractive. It would be unfair to leave a formal negative review simply because you did not find her attractive and walk
2. Feeling uncomfortable about the situation because something just did not feel right is again unfair to leave a negative if nothing actually happened but you just 'felt' uncomfortable. For example in my situation the guy outside could have resulted in something bad happening but he also could have been an innocent neighbour. To leave a negative because I got a bit scared and walked at this point would be harsh especially if the situation was the latter
3. Leaving a negative because the location was not to your liking because for example it was not discreet, or untidy hence you did not proceed with the booking is again a bit harsh if you leave the review purely on those grounds. An example is Ruby woo in streatham - if punters walked and left her a negative because they did not like the state of her flat her ukp review stats would be very different and unfairly so