I'm having a problem with the Facebook Like button. When i like one of my posts the thumbnail is a Tumblr-button from my sidebar. I tried using this plugin, and when i go to the lint tool on Facebook, the right image appears. But when I like my posts, it is still showing the Tumblr-image. I tried emptying my cache. But it doesn't work. I really don't know what else i can do.
And another thing: how do I do the same with the Facebook Share? Right now it shows the only picture on the page which is a picture of me. I really want it to be a logo instead. How do i do that without having to put it some random place on my site?
I hope someone can help me!