Hello, I lookat some machine softwares for linkexchange and article submission its really useful for SEO instead of manual submission?
go for manual submission when you do article submission as it is much better. using softwares for linexchange depend on what are you doing? probably looking for the website to do it then it's okay
Don't go with softwares for linkexchange and article submission. It's not worth. You can use Roboform for fast Manual Submission.