What's really killing the land-line business?

I found the article on home-based telephones very timely since my husband and I were close to cancelling our home phone. We have two land lines in the house. One for the home and one for the fax/business office. Until a few weeks ago we had the 2 telephones and a DSL line through AT&T. Our DSL line was so old we could not get someone to service it so we decided to take the plunge and switch all our services to Charter cable services. We added high speed internet, cable TV and the free home phone line (they were able to keep our current home phone number). We calculated all the old bills from AT&T with out new plan and the new plan is less plus we have faster internet service and HBO. If Charter had not included the land-line for free I would seriously think about going the way of the new generation and depending on cell phones only. After the earquake yesterday it was interesing that the cell phones were jammed and our land-line worked. Guess, we will keep the land-line.