Actually, it makes it more effective if anything. The browser displays it as a single whitespace, but the source isn't altered, (and therefore easily checkable).
Yeah but if a user copy/pastes it from his email client into his blog posting system, the double spaces are stripped, too (I checked it with Firefox, maybe other browsers work differently). It would only work I think if the single/doubles space pattern was preserved across copy/paste operations.
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Actually, it makes it more effective if anything. The browser displays it as a single whitespace, but the source isn't altered, (and therefore easily checkable).
Yeah but if a user copy/pastes it from his email client into his blog posting system, the double spaces are stripped, too (I checked it with Firefox, maybe other browsers work differently). It would only work I think if the single/doubles space pattern was preserved across copy/paste operations.