I'm generally pretty good with SEO (still new, but learning), but a rather beginner thought hit my mind tonight. Do you get multiple backlinks counted from the same domain? For instance, If I comment 10 different articles on a single site over time, do all 10 count as a backlink? (assume the anchor text is the same for each). I always try to find new blogs, articles, and so on each day, can I be going back to the same blog and leaving comments on new articles, and still benefit? The thought that lead me to this is forum signatures, I've been told only 1 counts per forum, not sure if that's true. Anyway, let me know, use some proof please, I really don't care to hear the improper English responses with absolutely no useful info.
It depends on what you mean by backlink. If you just want to know the total number of backlinks, then sure, why not? The total number of backlinks really doesn't count for anything though. What I think you really want to know is, does it count as a backlink that will help your SERPs. There are alot of different types of backlinks that DO NOT help your serps. No Follow links for example, do not help your SERPs. In my experience, multiple links from the same domain will only provide slightly more SEO benefit than a single link from that same domain. That includes blogspot and wordpress. You will however, have the possiblity to benefit significantly more in direct traffic.