A number of trends suggest major problems for the future of Microsoft's long-running Convergence user conference. The fact 4,200 users attendance this week's Summit for Dynamics user groups in Reno, Nev., suggests users are voting with their feet after years of complaining about the decline in the value of Convergence sessions. That is up from 3,500 last year. Another is the potential ISV exhibitor revolt after last year Microsoft did a banner job in recruiting vendors for the show.