Mocavo.com is now part of the FindMyPast.com family. Please visit our review for FindMyPast.com.
Mocavo may be more suited for people who are already experienced with genealogy research. The company is still fairly new so they have excellent features for doing genealogy research but they struggle with customer support. Their help section is not searchable and there is a lot information on their blog and the getting started portion of their site which makes finding the specific information you want very hard.