It's nothing more thatn a simple way of registering agreement or disagreement with a post. Nothing more or less. Its certainly nothing personal.
You're still wrong.
Now, now.
You posted <words to the effect> that it was a ludicrous suggestion that Southampton would want him.
In my opinion, Southampton ARE at the very least 'watching his progress'. My thumbsdown was the lazy way of showing my disagreement with your statement.