5/3/1 by Jim Wendler is a strength training program sold on www.elitefts.com. This is the program I use for my weight training because of its simple nature, easy application, continued results, but most importantly, the great selling that Wendler does on elitefts’s site. The program is only a basic outline, with some set rules, but is very flexible in what can be done. This leaves many questions to a lot of users, and Jim is available to answer all these questions, and he answers them on a daily basis on the Q/A board. From a marketing standpoint, this is personal selling to the person who is asking him questions, but also mass selling since usually they are broad questions that apply to many people, and it is also customer service. When someone has bought the program and has gone on to use it with their own twists and is having undesired results, Jim is available to help get them back on track. After following his log for a few months (here: http://asp.elitefts.com/qa/training-logs.asp?tid=63&__N=Jim%20Wendler) and reading his Q/A I was sold on the program and the support available, and have faithfully followed this program for two years and have every intention of staying with it for a long time to come.