Is there any good blog commenting software,which works?

I have tried a few free/trial blog commenting softwares such as comment kahuna,fast blog finder and real link finder.
I feel that they are useless because first of all i got very few results and those were also not very relevant to my area.
Do paid ones work?

Please tell me i someone has any idea.

 

if any one know it, let me know, but I don't want to spam,

 

Try using Google, read the posts and make good relevant manual comments. Most blogs worth commenting on will block the automated comment spam.

 

The simple way is to use an form filler with firefox and to manually visit the pages and click on Form filling and submit it...
Thats it...