I like the ones by Yugo the best.
My preference would be to take the first one of Yogo's and swap the image of the girl with the one of the bags. I'd also change the color of the "m" to match the "Art", unless this is for an art site.
Ones that should be dropped entirely? Hazrd and deathk. Hazrd's takes from target and amazon, and deathk doesn't look professional.
kpelon's entry has issues with readability.
stardesigns99 and kahara's designs are nice and clean. kahara's design is more laid back and seems to "shout" less.
digital29's is nice, but the logo is fairly plain (and made too large for being so plain, but that can be easily fixed)
I agree with flow's comments.
I would maybe play with yugo's some more. Have the gal with the computer on the left and shopping bags on the right.
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