Site update: Improved default avatars

If you haven't noticed quite yet, I recently made a change to the default avatars on Techman's World.

Previously, I made a avatar logo for Techman's World, based on the main site's logo of course. The only problem with it was Disqus doesn't like transparent avatars, and likely won't for the probable future. I contacted them about transparent avatars before but they said they'll get to it eventually. I think they are more concerned with the new Disqus and Disqus mobile at the moment. All transparent parts in the avatar logo was black. It made the avatar looked terrible.