Sometimes, but in this case it's just to inform the masses not to be irksome, overcompensating ****wits when it's actually easier and more beneficial to use the standard form. Holy **** that one annoys me. Similarly strange, but more accepted, 'you've got an agenda'. Surely this should be 'an agendum'.
Surely 'agenda' is widely accepted as singular now? Things change, and language certainly does. I'm still getting over hoof/hoofs! (Not hooves? )
It's just a case of using anything but Internet Explorer as a web browser. Chrome and Firefox (I think) have built in spell-checkers.
You can get an add-on for IE too, but the point of all this is that a spell checker is just that. It doesn't compensate for bad grammar, and won't correct bad usage of possessive pronouns etc.
It does change, of course, but this particular change is borne from ignorance of the Latin neuter plural rules. Increasingly the criterion/-a will go the same way, which I think is a shame. I'm not going to tell people they're wrong in colloquial speech, but I will use those singular forms myself and will suggest they change it if they're writing formally and I'm proofreading or whatever.
