What should we post in our blogs-real facts and information found in other sites or our personal unique opinions ??
I find referencing facts from other sources and then adding my own opinion to it always works well - if you can't break news then you need to add your own spin to it.
It depends on what kind of blog you want. If it is a personal blog then obviously you need your opinions, if it is a news/information type blog then you might not want it, or you can do a news/information type site with your opinions as well.
Yes but if i use articles of other sites won`t it be some kind of breaking the copyrights and you all talking about the so-called ''unique'' content that helps your site develop.. ??
I think that it is impossible to make quality content based only on your opinions. You should try to collect informations and then make something useful for your visitors. It could be your comment or just list of some useful things from other resources for example.