I haven't seen a change in business as of yet, however, I document life from an editorial perspective so its very one on one and in clients personal space (home or office for the most part).  If anything those businesses that are seeing a slow in traffic have a bit more time to devote to getting some of their marketing, imagining and branding projects done that often get put on the back burner.  However, if this continues for the long haul I could see it impact how people spend and that effects everyone.