Posting your opinion about a similar situation +/- posting new information on a report that is useful to the moderators.
When there are 50+ posts to read through on a report I don't want to have to read information that is not of value to me that I could look up on the internet quite easily or ask people about.
If you had came in and said "Oh, I middlemanned this trade and here are x screenshots" sure. Otherwise no need to insert a similar case that I don't need to make a decision. This is why in vbullietn certain people could only reply to the threads, sadly we cant do that with xen.