I am a former Peace Corps volunteer from Madagascar and currently a resident in the country after four years. I am fluent in the Malagasy language. I do not recommend this dictionary to anyone traveling to madagascar. This dictionary is difficult to use, insufficient, and often incorrect. It is also very expensive compared to the dictionaries available in any major city in Madagascar.
There are two excellent dictionaries in print in Madagascar. They are printed by the malagasy lutheran press. The malgasy-english dictionary is pink and sells for 4,000 Ariary (2 dollars) in the capital. The better of the two english-malgasy dictionaries available in madagascar is the yellow, pocket dictionary. This dictionary includes a list of useful obolana (proverbs) and their translations as well as some cryptic grammar notes (but what grammar notes aren't cryptic).
In short- don't buy this online if you are going to madagascar as you can buy cheap, good dictionaries when you get there (even at the airport). If you want to learn some words before you get there go to the online dictionary at http://malagasyworld.org/bins/homePage
Good luck. Mazotoa!