[I’ve created my new site and am looking at article writing and press release submission for marketing, but some sites do not allow anchor links, so instead, I can only fit in text URLs to my website like
<a href="http://www.domain.com"> www.domain.com </a>
So my question is, is the plain text URL without anchor effective at all for SEO? and does google consider it important, even just a wee bit?]
No SEO benefit, the only benefit you get is from type-in traffic which bypasses the search engines. Some article directories will automatically hotlink your plain-text URL. If they don’t let you have a hotlink, move on to other directories.