Differences between DOFOLLOW and NOFOLLOW

In internet's world, there are two kinds of webs/sites, that is DOFOLLOW and NOFOLLOW


About DOFOLLOW
Dofollow means, that if we leave comment to  a dofollow blog/web it will be like a backlink to our web/blog.

About NOFOLLOW
Nofollow means, that we won't have a back link although we leave lots of comment in  Nofollow blog/web

---

Comparison fo Advantages

No.	Advantages of NOFOLLOW
1	Safe from interference spammers seeking backlinks carelessly.
2	More interested in SEO of Google, because Google engine prefer this kind.
3	That we can Pagerank pure and stable. Not fast rise or fall rapidly. But up slow but surely.
4	More challenging to find a creative post, because depending on the quality of incoming comments of our posts.
5	Comments on the blog are purely due to the benefit of our blog.
6	More flexible do blokwalking to make friends and exchange links

No.	Advantages of DOFOLLOW
1	This blog readers preferred because it provides the benefits of free backlinks.
2	Blog entries many comments criticisms and constructive suggestions
3	Increase pageview blog
4	The owner of the blog is considered one who has a social life
5	Relationships are also increasingly strong friendship. And we frequented

---

Comparison about the Disadvantages

No.	Disdvantages of DOFOLLOW
1	Many spammers who make comments like PTC scam or scam business visiting. But it does not matter if we remove it.
2	Sometimes it is because too many links, even blogs google banned. And consequently it down diseo

No.	Disadvantages NOFOLLOW
1	Nothing to comment or little, but I'm sure if it is useful there must be willing to leave a comment.
2	The owner of the blog is considered apathetic, it is also less precise. Because the blog owner will usually be happy to exchange links and I'm sure he's really like.
3	More vulnerable to new blog readers left

---

References:
Searching On Google :
http://putupunyablog.blogspot.com/2012/08/pengertian-dofollow-dan-nofollow-blog.html