To the OP, I think you're learning a few lessons about constructive criticism: how to give it and how to get it. To recap:
- Consider the quantity of people you're asking for feedback. Perhaps you should start with a friend. MacRumors may not be the right place this early in your learning phase if you don't want lots of responses. Especially not the thousands that peruse Design and Graphics.
- When asking for feedback, you state the objective of the design and ask if your viewer feels you have met the objective, why and why not. You stated the objective was for your upcoming graphic design website. I think people were honest in answering to that criteria.
- Feedback hurts but it builds strength and a desire to articulate your position and needs up-front.
Regarding your logo:
Color - I think you picked two colors that work well, but this depends on the tone you're going for.
Outline - Why is there a gray outline around the teal K? This style doesn't work well. In fact the dark-gray outline around all type doesn't work well for a logo, as logos must look the same small and large. The outline will disappear when small, and reappear when large. That creates a discrepancy that is not viewed as professional. Think like album art. Album art must look good as a thumbnail in your Apple iPod Touch, and look good as a CD Cover or poster. Scalability is an important thing to consider.
Shape - A logo should work well as a shape. Pretent you don't know english or can't even read. What does the shape of this logo tell you? To me it says "complicated" because there is large type, small type, small type above, small type way below, lines here, kerning issues there. Please think of how you can simplify the design. I would start by removing the large K line. I would also not create a logo with such a small x-height. Think simple, monotone... these are the logos that look modern and professional. You got too creative, so too speak.
Typeface/Font - Why this font? Google the description of the font. What era is it from? Does that match the era/style you're going for? This font is feminine, so to speak. Does that match you or your style of design? It would be perfect for a fashion line, for example. Typefaces are the voice behind the words, in a way. This has a feminine voice. Nothing wrong with that, just want to make that point about typefaces.
You have a lot to learn and learning is fun. You will probably be amazing in one-year. Don't let the negativity prevent you from learning. Let it guide you.
Remember this quote:
"A professional is an amateur who didn’t quit."
So don't quit and time will make you a professional.