Nothing like a disaster to bring out the crimeware.
Keep your eyes open for disaster and aid oriented phishing and trojan scams. There is likely to be the same types of attacks that we have seen with other disasters. We can expect everything from Trojan horses designed to look like headline update tools, phishing schemes asking for donations, basic client-side exploits from web and HTML emails and the usual myriad of outright fraud.
Basically, if you really want to help folks, drop by known and trusted organizations such as the Red Cross, etc.
Be on the look out for strange network activity as this is likely going to be a basis for growing the bot-nets by yet another expansion.