Fandango’s One Word Challenge uses the tag #FOWC and pingbacks for any WordPress blog.
The Rag Tag Comminuty uses the tags #RDP and #Ragtag Daily Prompt and pingbacks for any WordPress blog.
Word of the Day Challenge uses pinbacks of WordPress blogs. I’m using a WordPress Tag #Word of the Day Challenge
Your Daily Word Prompt uses the tag #YDWordPrompt and WordPress blogs can pingback.
The Daily Spur uses pingbacks for WordPress blogs. I use the WordPress tag #The Daily Spur.
Three Things Challenge gives you three words to use in a prompt, they use pingbacks and comments as well as the following tags: #TTC #3TC #ThreeThingsChallenge.