And even someone as vigilant as I am, I fell for one of these (a fake tsunami YouTube video link in my Facebook feed) - It tried downloading a file to run on my system which was blocked by F-secure and was asking me to verify my age - which if you have a YouTube account it will ask you to login to your account to verify your age.
First - please read this site for tips on how to avoid the scams that are going on. This does include the one I fell for.
Here are a number of other links from a few security related sites that go over a number of the malware scams that are becoming very prevalent over the past week:
419 Scam (similar to the Nigerian scams - asking you to send money)
.tk domains serving out fake tsunami videos
Other Email SPAM messages requesting donations for Japan
Miracle and Survivor stories fake videos
Save Japan and Donate to Japan fake websites