Alphathon wrote:.
The mixing up of then and than in writing is another one as I don't understand how it happens (other than as a result of a typo/autocorrect). Are they homophones in some accents? To me at least their pronunciation is quite distinct, unlike there/their etc.
Yes they are homophones to me.
The only one that really bothers me is misusing using myself. "Give it to myself or Michael". For the most part people only do this when they are trying to sound formal, not when they are speaking one on one.