There are forums where even though you can leave your URL in your profile, it can't be seen without logging in. Are these profiles still good backlinks or not? And is it meaningful to do SB blasts to these profile pages or just a waste of time? And what about those forums where the member page can be seen, but you have to click on another tab (like Contact Info) to see the backlink (for example forums.spry . com)? Should I bother SB blasting those? Thanks!