Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
What is Simply Linux? This is distribution which is based on the core of Alt Linux. I wrote about Alt Linux couple of times, so you may wish to have a look at those posts. Alt Linux is commercial product which is marketed in Russia for use in schools and government organisation.
On another hand, Simply Linux is not commercial, but community project, which is also supported by the team of Alt Linux.
I honestly tried to write a review of Simply Linux earlier. But unfortunately up until recent version this operating system was not released in Live mode. Latest release of version 4.0, which happened on the 29th of August 2011, changed the situation. There is Live mode now.