Entries #3 & #2 are nice concepts right off the bat. Would like to explore more iterations on the "globe" theme which emphasizes world well. Important notes to designers is this is a logo that needs to look stellar in online mediums, print materials, large banners, etc.
I like this concept. Maybe we can explore building on this one with just a few minor tweeks to see how they look?
1.) possibly making it a bit larger all around. 2.) experiment with different shades and colors for the "conference and expo text" 3.) curious as to which one you like the best and why.
Before i joined you contest, i read all of your brief,s and understanding about your style prefers, you like BOLD Simple Easy to Know (remember) can work good in monotone representing WORLD And easy to use it in various media (printing and web)
I like #20 :) its simple and easy to remember it and of course enough strong Simple is the best