I''ve observed a website where 'then' is all used as 'than', 'where' as 'were'. However, they('then' and 'where') are also used in their normal contexts. It's updated on a daily basis, so I don't ascribed them to spelling mistakes. The writer is claimed to be from a US city called 'San Dimas'. Following is some examples:
1. However, deaths caused by stupid people shaking the champagne bottle and then pointing it at unsuspecting guests just before popping the cork where up by 59%.
2. The potential market for this search engine is much bigger then even Google's market.
Are they some kinds of dialect in that place? Could anyone explain it to me, please? Thanks very much!