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As a web developer, it's not uncommon for me to place a link in the footer of a website to give myself credit for the web design/development. I recently decided to go back and nofollow all these site-wide footer links, to avoid potentially looking spammy. I wanted to know if I should remove these links altogether, and just give myself text credit without a link at all?  I would like for a potential client who is interested in my work to still be able to get to my site if they like my work - but I want to keep my link profile squeaky clean. Thoughts?

Hello everyone! I manage 3 large eCommerce sites that sell textbooks, digital learning solutions, electronic teaching resources, etc., to three different markets in the education space (K-12, College, and Post-College/Career Search). Currently, the 3 sites live on three different sub domains of the companies main domain.  Is this best practice?  I assume we want all three under the same domain to consolidate domain authority. But... What if I told you that we have dozens of sub domains of the companies main domain?  Some are for marketing sites, some are for digital products, some are customer-specific sites, etc.  We probably have close to 100 sub domains that are used regularly. Then what if I told you that the company doesn't hardly even use the root domain (other than a handful of old pages)?  Even the root domain redirects to a sub domain. Just looking for some insight on this, as I will be doing an SEO/marketing/conversion overhaul going forward. On a side note, we use Magento as an eCommerce platform, and it's rampant with duplicate content, duplicate page titles, pages with too many links, and so on and so forth.  That's another problem for another day...