Probably subtle differences per category.   I'm afraid to get into the baby clothes though, for fear of what I might find.

Drugglas, as an ex-English major, I don't even know anymore, or care.  But actually, I wondered the same thing about some of the posts.  Was the Harley guy intentionally misplacing 'witch' for 'which?'  Maybe the guy hiring painter's was testing us? We may never know.  One time I witnessed Paul Lundgren misuse 'their' for 'there.'  Sure I forgave him over time, but the scars will always remain.  And you know, language is kind of imperfect anyway, and rules are made to be broken.
 After the apocalypse, when we're roasting babies over a pit, I'm sure we'll all look back and laugh that we were ever so picky as to dissect Craigslist grammar.

Well, I still know a couple people who have their wives use the computer for them.  I remember last year in the Tetons, my friend calling his younger brother, who doesn't use computers and trying to explain how to enter information in the google box at their family home to do some banking, and seeing as how he was helpless, hung up in frustration-  his smarts are in other areas, and he knows enough to stay away from computers. Me, I kinda got suckered into it,  and I still don't really know how computers work.  

I grew up with a mentally disabled brother, so really, any sort of basic everyday human achievements amaze me. I read a book once, printed in the early 1970s granted, that said, every person on the planet, including my brother, has more mental synapsis per diem than all the computers in the world combined. Though this is probably no longer true, people are complex, and, so what if they aren't linguists?  I thought the same thing Bev, if you can build a bike, or a car, you're no dummy regardless of how you come over on Craigs. Thanks for the tip Fitz, and the responses everyone. Surprised I haven't seen the best of, it's a really good idea though.

And, I secretly just wanted to help this guy sell his bike.