Regardless of how many different screensharing services and programs you use (skype is my favorite), you’re going to run into clients that lack the ability to easily share your screen to preview non published documents, website changes, etc.
Join.me provides an amazing solution that doesn’t require viewers to register or download software. Anyone can go to their site and immediately launch a screen sharing session with up to 250 viewers, free.
You’ll be presented with a unique URL to your screen sharing conference to share with participants once you create a screen sharing session. A floating remote control panel allows you to start / stop the session at anytime. Easily share control of conferences and use the built in chat to communicate with users who don’t have audio enabled.
While free version will do absolutely everything you need to instantly share your screen with other internet users, the pro version supports scheduling, custom URLs, user management and other features worth looking into if you. The pro membership costs $19/mo or $149/year.