You shouldn't be using SPIonic for new posts anyway. Get the Gentium or New Athena Unicode font, and set up a Greek Polytonic keyboard to enter Greek text for new posts. For old posts that have SPIonic, they should show up as betacode if you don't have the SPIonic font installed, and betacode isn't that hard to read.
I, Lex Llama, super genius, will one day rule this planet! And then you'll rue the day you messed with me, you damned dirty apes!