The compilations of logos seem very educational because they give us many ideas with which we can achieve great designs in this area, although as I always tell you, never stay with just one, you have to try to get everyone's ideas.
I would also like to remind you that in most of these cases the logos are from imaginary companies that curiously have a name that fits with the logo, but let's not forget that it is an exercise in design.
Source | designm.ag
The one with flud seems fascinating to me, although I find it difficult to maintain the same impact at the time of printing.
Everyone else is great and a hooray to the 2014 Olympics, I think the circles need to modernize, and the same logo for so long.
Excellent blog.