well, i believe that there would be an impact or feed back that must go to search engines, when our comments get marked as spam by site admins. i was not able to find any help regarding that anywhere. what do you say, there would be some negative impression or its just an image of my mind ?
when you comments to any blog marked as spam, it is stored in their database. and it is not shown to their blog. if your comments do not appear their blog, then you do not get any backlink from there. so it is obviously a negative impression on your site.
If your link was there and then is marked as spam then that will count as a link lost. Also don't forget that such as google also run a blogging system and that must have an impact when your site gets marked for comment spam.
so how come we can make it possible that we should not marked as spam while commenting on high pr blogs etc.