Funny playing with the logo, url and tagline. You used different solutions for each of the sizes, but thanks to the consistent use of background they still can be seen as a whole. Also, the background is light and subordinate to the more important logo and text, which get the full attention. I dont know well what I'd expect if I didnt know the site, however "for pixel addicts" should be the trigger for the more graphic minded people. Personally I dont think that all the designs work as well (if it's about composition and eyecatcher to click further) but others like the big one left and the 2nd from right under certainly have potentional. Overall interesting collection, I'd say make some more . Good luck!

Interesting work author with cool selection of colors...GL

revised! made a lot of changes..hope this is better!