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Sneaky legoburner....

Take a look at the following:
Area of a circle = pi*r^2.

I can assure you, I didn't type out the word "are" there.

Whilst the formulas may suffer, I get the feeling we're better off with the filter than without in this case.

using uppercase single characters will evade the filter. R R R

If u r not satisfied with caps, u may also find the code tag useful. Makes formulae easier to read too, at least for those used to working with them on computers. ;)

Freakishly enough, the preview on the thread list mouseover still filters it as the correct words.

I was not even aware that we had a "textspeak" filter, but knowing this I am glad that we do.