This user on Stack Overflow has Google Plus link under their user profile's Website attribute. URL is displayed only as a text and not actual link to their Google Plus Profile. I pasted the same URL on a browser address bar and it seems to be a valid URL. When I viewed the page source, I found the URL is simply displayed within <td></td>
<td>plus.google.com/101232353560988836676</td>
I even tried pasting the above URL on my profile and it did display the link correctly. When I pasted the text plus.google.com/101232353560988836676
, http://
was automatically prefixed to make it a valid URL on my profile. This tells me it is not necessary to have http://
before the URL text.
Why isn't this URL not recognized as a valid one for this user and displayed as such on the user profile?