>> I mean & I interpreted that the common user/man thinks of what (is the purpose) after hearing these site names.
>I don't see any evidence that people in general assume the name of a site must literally describe its purpose, or that anyone is confused when it doesn't. Amazon.com seems to do fine, despite not being a site about the Amazon.
Sorry if you misunderstood me, nowhere I meant to say that a site domain needs to be descriptive of its function. I meant that if you ask a common folk about facebook, they will respond with social media, instagram-> photos, youtube->videos. The domain could be anything, I was just stating that if common people could say what is that site about after listening the name.
>>Not many people outside HN Crowd or tech knows about reddit; many of those regular fols use Facebook for reddit-related things like discussions, meme, groups, meetings etc. So, for a common user (not HN Crowd), Reddit is unknown -> ????.
>Reddit ranks as one of the top 10 most visited sites among American users, and is in the top 20 worldwide. You can find articles about it surpassing Facebook in popularity last year.
Of course, the Reddit is Front Page of Internet, its the most visited site on all of my devices. When I have nothing to click, I always go to either reddit or /r/all.
My observation group in my above comments were people around me; my siblings, relatives, friends from India in India, Qatar, USA; by no means a representative sample but just people around me.