12 Backlinks per day on 10 sites, Yes you can do it manually its the article that gets on to your time.
Just some facts: (incase you have not heard it yet and you have value on Google ranks)
Google has placed a lower priority of links found in the "gutters" and footers of sites. Even though they have said they can detect paid links and not count them, we know by testing that isn't true. We also know through testing that links found in the gutters and footers were given less value than links found in the content of the page. This means link within an article have more value than blog commenting, forum profiles, blog comments etc.. I am not totally saying they don't work at all it's just that it has less value now, since the last google algorithm update.
I hope this will help you a bit. Enjoy....