I have had Wildblue service since about March 2006. It was great for 3 months but then curiously began to lag. It is now FREQUENTLY slower than my dialup in the afternoons, if I even get a signal at all. I get reasonable connections in the wee hours--go figure, everyone else is sleeping. My opinion is that they have oversold service on the beam that I am on, which serves one of their most--if not THE most--populous service areas.
If you can tolerate the uneven level of service, fair number of outages, and it's your only other choice besides dialup, well... just be aware of what you're in for. Possibly new customers will see better service if you sign up after March 2007 when their new satellite is put into service. Us existing customers are SOL since their apparently is no plan to move us over to the new satellite to cut down on congestion.
As far as customer service, I've called several times. Never had too long a wait to get to a tech, techs are always friendly, but they don't appear to have a lot of knowledge or tools at their disposal for helping customers. They have never provided me with a good (or honest) explanation about why my connection speeds vary so dramatically throughout the day.
Even though my employer reimburses me for my monthly Wildblue charges, I am still considering NOT renewing my contract when it is up in a few weeks. It's just too damn frustrating to deal with. At least dialup is consistent.