[Falling3]

I see this pretty frequently even in business communications with native speakers. Even using apostrophes for pluralizing is surprisingly common.

[yosito]

To be fair, I've caught autocorrect inserting apostrophes in my plurals more than once.

[bigDinosaur]

Apostrophes for plurals are sometimes the better choice, despite what style guides may say, for informal communication where acronyms are used and the lack of an ' may confuse people who think that the final lowercase s should be uppercase and part of the acronym.

As Orwell said, sometimes using some barbaric language construct is better than adhering to perfect style :-)