External URLs don't work if the submitter forgets to prepend "http://"

Many times I click on URLs submitted by users and end up getting a 404 type page from techentreprise.com. It seems the reason is that the submitting user did not submit a full URL (i.e., starting with HTTP://) but only the domain and path (i.e. www.yahoo.com).

Since the URL is rendered just as submitted, the browser treats it as a relative URL.

It would be better if techentreprise checked to see if URLs specify a scheme (i.e. HTTP://, HTTPS://, MAILTO://, etc) and prepend a default of HTTP:// if none is specified.

This check could be implemented either at the time of submission or at the time of rendering.