Dear Grafismo, Thanks for the many entries first of all :) .. If you look at other comments and excluded logos, you'll see that we are not much fan of lightbulbs and mechanic associations. I think the effects you play with are interesting, but need to be applied on something that is much more resembling of a human face or brain or both. Also interesting play with the plus position, but looking at other logos, I generally like it not overlapping with text when the plus is on its own. Hope this feedback helps. :)