Is " Comment the blogs for one-way backlinks" good way to promotion? Does it really help to promote your site postion in google? Is it an effective way to promotion the site? Should the blog topic be related to the topic of the site? Thanks.
if you make useful posts, and your site it on topic, then it's ok. If you are just spamming that you'll make people mad. I do my best to report people that spam my blogs (I try and email their host).
How important is relavancy? I see a lot of signature links here where the websites are not related to the conversation topics. Most individuals haven't discussed relevancy on these forums. I think relevancy is more important than these forums are giving it credit for. Any disagree?
Only if your comment is of quality. Leaving "great blog" is spam and worth nothing -- it will be deleted.