If a site has Certified Metrics instead of estimated, that means its owner has installed code allowing us to directly measure their traffic.
These metrics have a greater level of accuracy, no matter what the ranking.
If you don’t see yourself yet check if the browser is asking you to allow access to the camera in a message at the top of the screen, near the address bar. If you don’t see anything after clicking “Allow” and confirming the browser message (if you had one) then there’s a problem.
Sometimes you won’t be able to click on the “Allow” button in the box to the right because you won’t see it, which also indicates a problem with the connection or configuration of your webcam.
In these days use of mobile devices and mobile internet is increasing and that is why html size is so important for a web site, we made a test and see that web4cam.com's home page is 6kb which is really good for mobile users. Keep in mind that external links are ok, but too many of them will always be problem.Use this online web camera test to make sure that your webcam is actually working and properly set up.If you are trying to use your usb webcam for video chat, IM, or for recording yourself – with no success, or if you want to know how many frames per second your camera is recording.Online communication, or chat, can be divided into two types: text chat and video chat, which has become the most widespread mean of online communication since webcam became popular.With the help of webcams people got an opportunity for distant communication by means of accessible web interfaces called a web chat or cam chat, or special software programs like Skype.