if i write comments in relevant blogs/forum with a link to my blog?

[Mark]

and if some of the comments are the same comment. like in three related blogs and one related forum i write the same comment with a link to my blog, will that be good or bad for my blog?
because the comments kind of repeat themselves sometimes.

[Mike]

Hello,l I can say that you will build back links to your blog from commenting on others blogs, which is a good thing. As far the same comment of different places I would suggest not to. You can spin it a little bit so they aren't the same per each comment. Google like fresh content. Also a hint for you, you can make a google alert for your blog to see what google finds for your blog. Hope this helps take care.

[Marina]

Try to vary or you could like a spam.