THE INDEPENDENT - Jan 4 - According to extra-marital dating sites such as Illicit Encounters, Lovinglinks.com and MaritalAffair.com, the start of the year is the time most married men and women will sign up to commit adultery. IllicitEncounters .com, is expecting a 300% rise in new members this week having previously discovered January 4 to be "the most adulterous day of the year". "Christmas and New Year are times when couples spend an intensive period of time with each other and their families," explains extra-marital expert and spokeswoman for Illicit Encounters, Rosie Freeman-Jones. "This can be quite claustrophobic and sometimes leads to a 'cabin fever' situation where both parties feel irritated with each other and cracks in the relationship start to surface. Illicit Encounters alone has 43,000 Irish members.