Hey Lesley,
thanks for your reply, and for taking the time to do the screenshots but I'm not using any add-on at all. I did use them in the past and know how they look like.
When I open one of my posts and pages and go to edit them in "text mode" I find inside my own posts these pieces of code:<a class="seomoz-highlight seomoz-highlight-nofollow" title="</p"></a>
<a class="seomoz-highlight seomoz-highlight-nofollow" title="</p">They are inside my posts and I have deleted some of them manually, but there are so many that I really would like someone from MOZ to tell me:</a>
<a class="seomoz-highlight seomoz-highlight-nofollow" title="</p">1) How and who gave them permission to put that stuff inside my own posts
- how to get rid of them
The other problem was with the source code, but I guess YOAST sells website's datas to SEO companies through is SEO plugin and I simply need to get rid of that rubbish.</a>