I currently have my blog on Tumblr, and I believe that the way reblogging works there is causing havoc with search engines. Basically the entire text of my blog post is copied over to someone else's blog, and Google is routinely adding my pages and then dropping them, adding them back to Google index and dropping again, over and over. I have no manual actions against my pages in Google Webmaster Tools, so I have no clue at all about why this happens.
I am looking to move my blog elsewhere but want to make sure I don't create the same search engine nightmare all over again.
If I enable Reblogging on WordPress, how do you prevent confusing the search engines about who is the actual original content author? The right way to do it is to have the reblog be an IMAGE of the original text rather than the original text, but apparently no one has figured that out yet and implemented it that way.
Any guidance on this issue is appreciated.
The blog I need help with is poetrydude66.wordpress.com.