I would guess like myself you are denied due to geolocation. I'm in Australia using an Australian ISP. I could load a proxy but due to so many anonyphobic sites or scripts via their API that really try hard to detect and deny proxies, I am not that engaged with a news item to go to the trouble. Also looking at my earlier comment in this tread also pointing out the 403, apparently some people don't like me mentioning that -- I guess I can wonder how long before onion and nearly impossible to load links will be OK at HN.