why do i get these messages on facebook?

[rohini]

the content you requested cannot be displayed right now. It may be temporarily unavailable, the link you clicked on may have expired, or you may not have permission to view this page.

when i click on my friend's profile, i get the above message. what does it mean

if i view the profile from my other accounts, his name doesn't show up

his name shows up but i get the message, "Sorry, this page isn't available
The link you followed may be broken, or the page may have been removed"

what happened to my friends's accoun

[J]

He may have deleted it.

[Sgtc]

He might have blocked you.

[Heyhowareyou!]

He deleated it or he blocked you