Learning the Halachot of Chol Ha Moed I have read on Chabad.org and other w ebsites that generally the same prohobitions of the 39 melachos apply except:
•Anything done in order to prepare or cook food.
•Anything done for medical purposes.
•Any non-strenuous work which, if not performed at the time, would cause loss (unless it could have been done before the festival, and was deliberately delayed until Chol Hamoed).
Why then is everyone using e.g Facebook,twitter their mobiles, driving their car etc. ( for none of thereasons described above) I'm definitly missing something. can you please help?