In most blogs (wordpress, blogspot and others), when you post comment, you can enter also your name and website. Then on name is link on your website. This follow or no follow link??
it varies but my default it seems most links for current software updates are nofollow. the blog owner usually has to manually modify the code or use a dofollow plugin. you should use Firefox and a plugin called "Search Status" to highlight nofollow links.
hi ... default on most blogs is nofollow ... also, in a lot of cases, the blog owner manually approves comments and is able to remove the link ...
Most of all blogs comments links is no-follow so that links are not useful. Many do-follow blogs that accept only do follow links in comments but comments must be unique, not spamming.