Given that I have a 13 year old daughter, I will nominate myself as an expert witness.
Cellphone/IM grammar and spelling may not carry much weight with us older folks, but is entirely common in that generation. A computer is an extension of that communication medium.
My daughter can communicate in a shorthand I can only see as the most horrible english imaginable one minute, then write with amazing accuracy the next. Depends on her frame of mind and intent.
That said:
Keeping a record of and 'logging' time are slightly different. Most Civil Aviation Regulations clearly define the time that can be logged but I am one who 'keeps a record' of many other details in my log book for personal interest, clarification of the 'logged' time, or to provide a record (of time as a sim instructor for instance).