If somebody just posted a infographics with a link then you can report it as low quality post. Mods generally trash these threads (from my personal experience.)
For sure, and I have spent plenty of time reporting people who just spam news articles they didn't write without a single original thought just to farm their account. The posts are deleted, but the user doesn't actually suffer any punishment.
in word of thread starting I do understand .....
Sometimes the posted thing could be a question as well, just to know how other respecter members thinking about that matter, so isn't it better to post it like that with a link rather then making it up yourself?
Sure, but I think the OP should at least be including a sentence or two, even if it's something simply along the lines of "I read this and found it interesting because of x/y/z. Keen to hear what other people think about it."
True your absolutely right.... (the again sometimes @ the WO things end up there, but thats more like a happy bullish quote or thing to cheer @

)
I'm also absolutely guilty of sharing something über bullish add the WO with a link provided, but I just don't do it else wear.... (sometimes its just important to know where and when as well....)