Well nobody really answered your question here. Is there going to be any affect on your website? its possible. If you change from godaddy to hostgator, or lets say you are using bluehost and you switch to madcow, etc etc. Each hosting company may have different guidlines as far as bandwith allowances, certain website templates my not work with every hosting company. And worst of all you may not get to transfer all your email addresses. With hostgator you can set up unlimted emails for each domain, so if you have 50 agents they can all have their own seperate email such as firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, other hosting companies such as godaddy charger you per month, per email for anything over 1 custom email address. So its best to make sure you do lots of research before changing hosting companies. There are lots of things that can affect a sites performance form company to company. Also not all hostings companys allow you to instal IDX, so if you are usnig IDX on your site make sure any company you switch to allows for that.