There is an interesting new feature in the latest versions of Firefox that allows you to make video calls without installing any additional software. With Firefox Hello you can invite others to a video call right from the Firefox browser. You do not need to sign up for the service and the person being invited does not even have to be using Firefox either.
Simply click on the smiling conversation icon in the Firefox toolbar to start a conversation. You can then email the person that you want to talk to the link to the conversation. You could also copy the link and share it via an instant message.
This is a quick and easy way to get a video conversation started directly from the browser. Simply download and install Mozilla Firefox or update your Firefox browser to the latest version to try this feature out.