Facebook Puzzle

[Griffin NoName]

I keep seeing people posting rows of little square empty boxes - in line about size of these characters I am typing.

I can't copy them here because when I click post they disappear from my post.

Google has nothing to say about them.

Anyone know what they mean?

[Bob in a quantum-state-of-faith]

All I can guess would be it's some sort of failure to show some sort of photo content.  Blocked content, perhaps? 

I've never seen what you describe, but I do frequently see "attachment unavailable" messages.

[Sibling Zono (anon1mat0)]

Little squared boxes in rows may be characters in a set not yet installed in your system, like Cyrillic, Kanji, Hiragana, etc.

[Griffin NoName]

Zono, that sounds like a real possibility. Not so sure about the missing picture theory as surely there'd be just one box and there's always a row.

Thanks.