Like

Liking a picture in facebook means so many things.

I like your picture

I like your expression

I like the colors

I like the caption

I agree with the caption

I appreciate the effort in taking the picture

Nicely arranged picture

It's a nice update from you

The picture reminds me of a good moment

I'm in the picture

You look goofy/interesting/stupid in the picture

Because I wanna show that I've seen the picture

It's your birthday, I have to like something about you and your picture is fine