This weekend the second annual ‘Winter Walk’ will raise awareness and money for  the city’s approximately 6,000 homeless men, women and children. It will be cold, and it very well may be raining — but that is the point. The walk begins and ends in Copley Square and gives participants the opportunity to enjoy breakfast with and hear stories from the homeless community. Jim Braude was joined by two of the co-founders of the effort — Ari Barbanell, the executive director of Winter Walk, and Paul English, co-founder of travel sites Kayak and Lola.