It's okay. I noticed that I didn't exactly say in my post that I did not mean "reblog" in the sense of one Tumblr to another, but in the genral sense that I of course blog my own art in a way, and then someone put it on their Tumblr.

I actually would mind it less if it was within such a system and I could still see the traffic somehow and such. I mean, I allow the embedding thing that deviantArt has so that others can repost a preview that then links to my page.