Letting viewers browse the directories of your website can be harmful to your website security,
Learn to restrict authors to specific categories in WordPress.
Live chat can help you get some more sales, Check best free live chat plugin with WordPress.
Use Lsi or Latent semantic indexing keywords to get the page on top of SERPs
Get the most out of your ads, check the list of top free WordPress ads plugins.
When new bloggers get into blogging they make some obvious mistakes.
Change your old login URl, Learn to add custom login URL in WordPress
There are some WordPress websites who have a default upload limit set to very low.
Getting ads revenue can be interrupted by viewers using adblock.
Make viewers tweet your post with pay with a tweet.