Pros
You get to work on diverse technologies, including some leading edge web platforms. There are a few decent people to work with.
Cons
Hey, have you heard the one about the software company which valued seniority, loyalty, experience and solid contributions? Neither have I, but I have heard this one, "We're staffing up at the home office, but don't worry, your jobs are safe." I heard that one after I'd been there nearly six years. They brought in a bunch of new guys, telling us nothing would change - and then everything did change. The new guys started getting all the interesting work, while the rest of us got the crumbs. We kept being told that no, nobody was working on the new platform - yet somehow it got written anyway. I complained about the mushroom treatment, and a month later I got my walking papers. No warning, no conversations about how my behavior was expected to change, just, "We have decided to terminate our arrangement." They've got some good technology, and no idea what to do with it. Every few months the Marketing Department says, "We could sell ten thousand seats if we just had..." So everybody turns 180 degrees to work on something that will be dropped the next time Marketing makes the same, old pitch. There's a difference between "Agile Development" and "Drunken Stumbling." Proscape is a great example of the latter.