Pros
There are opportunities to be involved from the ground up in one of the most visited websites in the world (400th). Walg has instant name recognition natoinally, if not internationally.
Cons
Business stakeholders are privileged, old guard and are not in touch with usability. "Agile," as elsewhere, does not mean scalable, it means bare-knuckled hurry up and get it out there - or else. There is consequently no deep understanding of process, because you have to care deeply about your web product to develop a process that truly (and not just in name) enables quality workmanship. The business analysis component is in disarray. This follows, since this function, at core, is ideally an arm of business strategy. Those close to the stakeholder side of the house will find stakeholders largely undisciplined ideators who don't understand the process of evaluating and implementing an idea - and then evaluating the implemented idea. They are driven by arbitrary timelines that, if accomplished, mean bonuses. The timelines have no relationship to the real time it takes to deliver a quality product. There is no UAT. Usabliity testing is in its infancy, although the shop has state-of-the-art equipment to accomplish this.