When I have tolerance for it, I browse the Canadian Money Forum. There are a staple of regulars there, some that know what they are talking about, and some that sound like they know what they are talking about, but don’t. Then there are the batch of people that don’t know what they are talking about. It is a surprisingly good indicator of retail sentiment, especially in the younger age category (who presumably don’t have access to millions of dollars of capital and can’t move markets, but would generally be indicative of the mentality of higher risk-taking individuals).
A large misconception I see concerns dividends. I will state the misconception:
Misconception: Dividends add value.
They do not. Dividends represent a direct transfer of cash from the company to the shareholder.
Sometimes dividends subtract value, when the consequences of taxation are considered. In Canada, the eligible dividend tax credit mostly eliminates the penalty of double-taxation for non-registered accounts. In the USA, qualified dividends receive preferential tax treatment, at least until December 31, 2012 with existing legislation.
A mistake that retail investors make is that a higher dividend yield means the company should be more valuable.