Some SOcial MEdia (SOME) accounts work better than others... this being said Yahoo seems to have issues more than others.
Don't really know why but please try again and it should work.
Also be aware that your session will expire in less than 30 minutes since last activity so you may need to re-logon now and then.
I am a big fan of fast loading sites. All of the ones listed above (plus few more) make this site considerably slower (tested few). If you know a _really_ good one then I am open for suggestions via consoleguru.uservoice.com
Here you go (some really excellent sites to go thru):
Commandlinefu.com - the best source for command line one-liners and more advanced command examples. Commandline does not provide noob class documentation about the unique commands though. This sorce is integrated in command example section
Chris Lane's cheat - command line cheat sheet for *nix. This source is integrated in command example section
Ubuntu forum - one of the best places to seek advice on Linux and especially on Ubuntu/Debian based distributions and packages
Cyberciti/nixCraft - Linux related magic in laymans terms (personal favorite due to valid content and clear layout)
Stackoverflow - generic questions and answers on all IT related issues