When you upload your family tree to existing genealogy sites, there are some disadvantages you may not be aware of. Often your site is maintained in a huge database along with other trees and your family names cannot be found through the internet search engines. this means that many people won’t even know about your family tree unless they go to the genealogy site that you have put your tree on. This means thousands of potential visitors may never even find your genealogy information. Also, some of these genealogy sites infact use and publish your genealogy for their own purposes inlcuding CD-Roms which they sell to other customers. They don’t need to ask your permission to make your family details available to others, because you are in effect giving them copyright priviledges to your own family information by giving them your tree.
I guess you can find the answer here http://www.beautifullife.info/web-design/best-family-tree-builders/. Being pretty new to the world of genealogy, I’m just testing out a few family tree softwares to find the one that meets my needs to the fullest extent.