I have reports from a SEO company sent me PDF file where backlinks source from profile on different websites. I would like to know backlinks from profiles consider as spam links or not?
Can any one advise me?
If you have a profile link on a forum and you never actually participate in the forum, then the backlink looks spammy and it is probably worthless.
If you get the profile page indexed, then the link might pass some value to your site, but the link itself still looks spammy.
If you participate on a forum quite a lot and you have a profile link pointing back at your website, that looks like a natural link.
If you are hiring SEO companies that build forum profile links, then you shouldn't be having them point those links at your primary website that you are trying to make money with. If you do that you are flirting with disaster. You are very much at risk of getting your site penalized by Google Penguin whenever they run the next iteration of it.
If you insist on using those types of links they should be used as Tier 2 or lower links that point to other places that already link to you.
In my opinion, I wouldn't bother using those types of links at all. They are unnecessary, usually worthless at best, risky at worst and certainly not worth spending money on. There are much better ways to promote your website. And much more effective SEO tactics. One decent link from one decent website is worth more in terms of rank boosting power than hundreds and even thousands of profile links. You don't need anywhere near as many links as you think you do in order to get good rankings. It is much more about quality than quantity.