Here are some of my observations on Pogo Chess:

It is Java-based SunMicro and very prone to glitching.
It appears that it is intentionally set up to force you to read their ads which
run for an absurdly long time. You are supposed to believe that "oh, they are
showing me this ad while I wait for Pogo to load the board and program". In
fact, I am sure it could immediately switch you to the board. Except Pogo
intentionally wastes countless of our hours, scrolling the same ads over and
over, while you wait.

Pogo is also set up, it appears, to report bogus error messages back to your
screen. Notice that it only "discovers the error"...after you have been made to
sit there and read their inane advertising for 5 or 10 minutes.Then, Pogo kicks
you back to the opening screen and makes you start all over again...reading
their jackass ads again and again.