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As the father of two young boys, I am shocked, appalled, and frightened by your great exposé "Arsenic in Your Juice" (January 2012). Any parent in their right mind would not even consider giving apple or grape juice to their children anymore.

Steven Campiglia

Bellmore, NY

"Hack-proof Your Passwords" (January 2012) left out the growth in demand for needless passwords. When online security vendors outdo each other by selling software requiring so many difficult passwords, it's no wonder people throw up their hands and use 123456.

Jim Parker

Austin, TX

Many websites that require registration don't accept special characters or even caps. How do you create a more secure password under those guidelines?

Don Lawson

Gardner, MA

Make the password as long as possible—nine or 10 characters if you're allowed; begin with a number rather than a letter; and use digits and letters.

"Fish-Oil Pills vs. Claims" (Up Front, January 2012) didn't mention vegetarian sources for omega-3 fatty acids. Algae-based products avoid the health risks from fish.

Jean Bettanny

Port Townsend, WA

Clinical trials show that the omega-3 fatty acids DHA and EPA in fish and fish oil reduce heart-attack and stroke risk. Algae supplies mainly DHA, which alone has not been proved to reduce cardiovascular risk.

TD Ameritrade requires no minimum balance to open an account. A Ratings chart in February on discount online brokerages indicated otherwise.