Devilcorp Scam at Target
If you go to Target this weekend, beware the electronics & technology section. A third-party vendor will try to talk you in to switching to AT&T. These guys work for companies known as "Devilcorp," (otherwise known as "Smart Circle," "Cydcor," and "Credico") who exploit young, naive recruits under the guise of life-changing wealth and entrepreneurship opportunities (even though most of them end up making barely a couple dollars per hour). Additionally, most contracts you sign from these guys will raise your rates or screw up your cell phone and Internet plans.
As somebody who used to do basically the exact same work, I can tell you that the vast majority of in-store solicitations (and door-to-door solicitations) are scams and will end up costing you much more in the long run. These companies scam recruits and customers equally.
edit: These guys are usually at the stores between 10am-7pm.