It depends on "risk tolerance" as someone here apt
Post# of 36728
In three major speeches since she was sworn in as SEC Chair (April 2013), Mary Jo White, an 'activist' chair in contrast to others before her, referred to a recent initiative, a pro-active MicroCap Task Force taking pre-emptive steps to protect the investing public. Required reading in my view, as it's crucial to learn the currrent mindset of regulators as a factor in gauging risk. She mentioned focus upon, among other entities, private equity firms that engage in misconduct in the microcap universe.
http://investorshangout.com/post/view?id=1443220