Caro - avoid the Daily Mail newspaper at all costs. A link was published yesterday to an article which stated that 'people will only gain benefits if they eat healthy' and 'non fasting days are a licence to eat unhealthy'. It nearly gave me a coronary - it should be the adverb HEALTHILY and its antonym unhealthily!!
My other pet hate is people who use 'A. Another and I' with wanton abandon - mixing up personal pronouns as subjects and objects in a sentence. In most cases 'Johnny and I went to the shops' is correct, but if the sentence didn't include the other person and you would refer to me, you should also use 'Johnny and me'. eg 'The 5:2 diet suits Johnny and me perfectly' is correct. 'The 5:2 diet suits Johnny and I perfectly' is entirely awkward and wrong! I hear this error on tv all the time and it drives me nuts.
And don't get me started on fewer vs less or the fact that none is singular - 'There is none left' NOT 'There are none left'. Ahhhhh!!!!!
I know - pedant alert!! I'm entirely inconsistent though, as I use local colloquialisms freely and never could get the hang of split infinitives.
Forums and texts are different from newspapers and tv scripts though, a bit of free licence should be allowed here!!