Few things bother me more than grammar or spelling mistakes. Sadly, very few have mastered the fine art of fine grammar. Many people also stumble on spelling. Perhaps an editor is needed to sort through some people's mess they call 'sentences.' While in the end, spelling and grammar mistakes don't really take away much from an article, a nicely polished piece of work is easier to read, therefore it makes its point more clearly. Some mistakes that I find to be especially annoying are listed.
Truly: It is not spelled Trully, Truely, Truelly, Trueley, or any other way you can think of! Yes, I know that 'true' has an 'e' in it, but you drop it for truly! This word looks just the same way as it sounds.
___'s: You don't use an APOSTROPHE (') and an S to pluralize something! Only use the S! There are certain cases where it may be acceptable, as in abbreviations and last names, but they are the exception. Why would you say, "The student's are going on a class trip"? This mistake is less frequent with younger writers (<35).
Your/You're: One is possessive--"Your dog barks at night." One is a contraction-- "You're letting your dog bark at night." They are not interchangeable. You cannot say "You're dog is annoying." That would be saying, 'You are dog is annoying.' That just doesn't make any sense.
Its/It's: As with Your/You're, one is possessive--"Its legs are broken." One is a contraction--"It's unable to walk because of its broken legs." If you said, "It's color is unique," you are really saying, 'It is color is unique.'
Goodbye: It is one word! Unlike 'Good night', this one is a single word. Look it up if you don't believe me.
Yea: It is not the same as 'yeah.' Yea sounds like hay and weigh. Not like yeah. Yea and nay are opposites, and sound alike. Congress does not vote 'Yeah' or 'Nay.' The best way I can describe 'yea' is to say that it has a long a. (ā)
I hope this has slightly enriched your grammar or spelling skills. Any help is welcome, I am sure. If there are any spelling or grammar mistakes in this, I will be sure to promptly shoot myself.