Here is my first logo idea for your consideration. I tried to find that balance between a playful, welcoming logo that still comes across as a professionally done logo.
#60 and #61 We still like this logo, but not the graduation cap. Even though we have a school presence, we want the kids to think of us more as an edutainment site.
Question about all the logos. Did you try make the ".com the same height as School Savings? I wonder if it would look more balanced? Or if then the .com wouldn't stand out at all.
I tried that out initially, but I will rework it some more tonight and post them so you can see them. Maybe one of the other scale-relations will be more what you are looking for.
Here is the version with a .com that equals the height of the rest of the logo. Let me know if there are any other aspects you would like me to work on.
#4 Your original instincts were right about the ".com" being smaller that the school savings. Everybody still likes this logo alot. They want to see it one more way however. Could you remove the "movement for..." and moved the ".com" below the "GS" so it was horizontal?
I posted a couple different variations (#85 & #86), where the ".com" is along the bottom of the design. Let me know if you would like to see anything else adjusted/changed/moved.
Just a heads up for you: if you are wanting to get your logo sent over asap, I can upload the files immediately this evening. If you would like both (or more, just ask) versions of my logo sent to you, I would be happy to provide each of them for you.
Thanks for running a smooth, efficient contest. Good luck with your final decision.