As a new member I want to make certain research and observation.
As a forum member can I use another member post but change some words and use as mine
You should not as it is text spinning that is one type of plagiarism. When your text spinning is reported, your account will be banned permanently. Because I am sure when you do text spinning, you intend to steal content of others and won't leave a source link.
Can I use picture on other site and post it here
Yes, you can do it and everyone can do it but if possible, please attaching a source link of image you use. Even there is no plagiarism ban on image but if you can attach a source link, it is better.
Can I copy and paste from another site.
You can but please only do it as a reference, a quote with a source link.
Don't abuse it to copy & paste just to get post count.
Generally please read
Bitcointalk posting etiquette to understand more about forum rules and learn to improve your posting skills.
These are the most common rule violations that newbies make. There are other rules than these.
- Plagiarism: If you copy some text from somewhere, then you should have a good reason for it, and you must link to the source. Doing otherwise is plagiarism. Changing a few words around doesn't matter. If we find that you plagiarized, then you absolutely will be permanently banned, even if we find it years after you did it.
In general, I'm all for being lenient. There are users who have been temp banned many times but still haven't been permabanned because their contributions outweigh their misbehavior. I
actively disbelieve in the idea of a "rule of law" where hard rules exist and are strictly applied across the board as if we're all robots. Every case should be considered individually in the context of the forum's mission.
Plagiarism is what gets people permabanned, not just copying. Plagiarism is copying with the intent of passing the work off as your own. In essentially all cases, plagiarism deserves a permaban because it usually proves definitively that the person is here for the wrong reasons: to fill up space in order to get paid, not to actually discuss or contribute. If someone was able to convince us that they were plagiarizing just to eg.
impress people rather than to fill up space, then a lesser ban of a few months might instead be warranted. But this has never happened AFAICR. (Arguments based on plausible deniability aren't going to work; we don't need to
prove that you had the motive we see in your actions.)
If you treat posting as a job, a chore, then you must live in fear, since the forum is not made for you. In this case, you need to blend in as someone who actually cares, but plagiarism will immediately out you, and producing a mountain of useless posts will also eventually be noticed, if more slowly. If you do actually care, then this will be obvious in your posts (and probably your merit score), and you will have nothing to fear from moderators; even allegations of plagiarism will be doubted when seen in the context of your other posts.
in extreme cases could be copyright theft?
Plagiarism is almost always a copyright violation which could conceivably get the poster in a lot of trouble, but it's not a bigger legal issue
for the forum than anything else. (Using the forum to violate copyright is never allowed, though.)
when copying and pasting from the net can it lower google rankings? and internal copy and past could do the same thing?
That's not a particular concern of mine.
even memes may soon constitute copyright theft
Only in the EUSSR.