Looks like the menu widget and icons are not using GTK for whatever reason. It may be worth pinging the KeePass developers with a screenshot showing that the GTK theme is not being respected properly when rendering the menu - the menu even looks odd using a light-colored theme like Clearlooks because it doesn't match the theme.
This article mentions that there is no native 1Password client for Linux and recommends some kind of dropbox workaround. While this probably true at the time of writing, Icculus recently wrote a native Linux client . There's more details about it in this G+ post if you are interested:
Steam is included in the Linux Mint 16 repositories and you shouldn't have issues installing it from the package manager. Or you can always "apt-get install steam". Like most Linux applications, you are better off installing the application from the package manager instead of from the upstream website.
Speaking of Milkdrop, the sources of milkdrop 1 and 2 have been released . A couple developers have taken the milkdrop 1 sources and built them into a cross platform visualization software called projectM . Milkdrop forever!
I think you mean audacious  not audacity  although both are useful tools (If you're not familiar, audacious is a media player that supports XMMS plugins and Winamp2 skins). But WRT Audacious vs XMMS, I've also noticed that audacious doesn't seem to scale as well as XMMS with a lot of songs in your playlist.
I'm not sure the author of this article understands subversion branching . As long as you are not making a commit to the master trunk, you will not be interfering with other developers on your team. The author dismisses SVN branches as a "workaround", when it solves all of the "scary" SVN issues he discusses in the article.
You are correct: MATE is the GNOME 2 fork that uses GTK2. Cinnamon is a modified version of GNOME3 that uses GTK3 and provides extensions to the GNOME3 desktop so that the default desktop looks and feels like a default GNOME2 desktop.