It's a straw hat argument. As you say no-one is guaranteed to be stating what they are actually doing so what is the point of the sentiment option other than as another ramping/down-ramping tool? All I can say is what my own sentiment would be if I liked a company, had a lot of money invested in it but was selling say 10% of it to try and reduce my buy in price, and that would be a SENTIMENT of BUY.
In the end I gauge NOTHING out of the sentiment and position values of a post, I gain everything outof the history of that person's posts.
SYT Price at posting:
3.0¢ Sentiment: None Disclosure: Not Held