Watermark?

Trying to design a watermark for my blog's picture.
But is it so damn hard!! ><

Put a logo or a text in a picture...is just...WEIRD!
The picture with watermark is just look like imperfect.
Like cacat! Haha...

Which pattern is better?? Put it on middle of picture? Top? Bottom?
Senget? Put two or one or three or what?
Make it more transparent or solid?? colour??
Write what good?? www.theblogisnotavailable.blogspot.com or owned by pei? or what??

I need suggestion!!!! SOS HELP!!!