Hi Bart,
Sorry, I had a couple of more ideas to throw out there for you guys. :) I will be out starting Thursday evening for just a couple of days (my kid's last hurrah before school starts up again), so I want to give you all the variations and ideas possible. Let me know if any other idea comes to mind that you may want to see. Even if some idea comes to mind while I'm away, I can wrap them up when I get back.
I tried the slogan in the only other place that would fit and that is around the moon. The concern I have is that your tag line becomes part of the logo itself. Usually, a tag line is added after the logo. However, I believe I understand your concern. Having the name, then tag line, followed by the web address produces 4 lines and becomes text heavy. My suggestion would be that the emphasis be just the logo with the tag line. The reason that I went with the italics, is so that it is distinguishable and separate from the logo. As for the web address, I think I would separate it so that there is more of a gap from the logo. For instance if it were on letterhead, I would run the web address on the bottom of the letterhead, same with the business card. Really, it can be done in several ways, and well designed stationary can be just as important and recognizable as a well designed logo. I think part of the problem is that when we upload we are limited to the small size you see. As designers we want to be sure the client sees the work clearly, but that size limitation for the contest page can also give the appearance that 4 lines of text looks more cluttered than it really is.
I hope this info has helped (and not confused you), Thank you for the feedback, it makes our work that much easier.
Marcelo