leftypol.booru was created after the original booru we used for 4 years, lefty.booru was locked and became non functional due to the inactivity of the original admin.
However the anon who mass reuploaded all the images from lefty.booru to leftypol.booru messed up while mass transferring the tags. That anon mass deleted the images that were uploaded thinking that they could be repuloaded but the booru software did not allow repuloading of deleted images.
So leftypics.booru was created, the images and image tags were correctly reuploaded there and it was used for a few months until another anon (me)
gained control of the original lefty.booru and reopened it.