If you mean here in the forums, it might have something to do with the spam filters that were put in place after many months of unwanted chatter here. Our lives are made more difficult here due to dozens of spam posts twice a day for nearly a year, so except for taking so long to squelch the noise, this one isn't Apple's fault...so much.
Best to avoid excess white space and seemingly random lengthy strings.
I think I know how to thwart the new filters, but if that was public here, the spammers would be free to run amok once again, so...give it a bit of trial/error - see if code snippets aren't subject to the same restrictions as simple text, perhaps.
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