Send money, not stuff. Charity organizations can use your financial help to restock their supplies, but, as the GlobalPost explains, sending clothes, food, or other items is, at best, misguided.

Charity Navigator, an independent evaluator of non-profits and aid organizations, has compiled a list of relief organizations working in Haiti that have attained three- or four-star ratings from their studies, and are generally considered trustworthy and efficient.

TIME points out the popularity of text message donation campaigns, but also suggests being cautious of online scams:

As with any kind of giving, it's wise to verify that the cause you are donating to is a legitimate organization before pledging your funds. This is especially true when you learn of a nonprofit on Facebook, where phishing and other scams can give the impression that your friends are sending out links, when really a spammer has hijacked their identity. Legitimate organizations also send a confirmation text moments after you donate to verify that you really want to give the specified amount, typically $5 or $10. If you say yes, then the amount will appear on your next cell phone bill. If you did not intend to donate, you can cancel your pledge.

CBS News recommends checking out any group you're about to give to at The Foundation Center web site, where you can look up that group's most recent tax filing and non-profit status.