The ease to get around, as it's easy enough for newbies like myself who are not very tech savvy at all! It helps me make good decisions about what pages I should be focusing my energy/attention too next by showing trends in certain areas.
My personal favorite feature would have been being able to add graphs or images along with posts which could include multiple pieces of data (for example - comparing 2 different sites). This allows us writers more freedom when posting articles because we don't need to worry if our article will fit into just one area alone; instead this software gives you options so your post can cover various aspects such as SEO, CTRs etc.,.