Scripter? Coder? Programmer?

I would like a basic - program for mac that would make liking on wordpress automated.

http://wordpress.com/#!/following/topic/

Instead of having to go through all of the posts liking the page (link above) and then scrolling to extend for more posts to like, i would like a program that would do this automaticly rather than manual, (something that i could leave running) and also choose to change tags that it is following to like, or even run it multiple times..

I would also like to test it out before full payment.