Why do some people say "I like" not "I like it" when they like something? I have seen that on the internet and in person. Is it even grammatical?
Edit:
Editing by request I have heard that bare "I like" as comments when they see something they think is nice they say "I like" and I have seen it on Facebook in pic comments someone would write a comments just saying " I like" also on informative postings. I hope this edition helps figuring this out.