Pros
Very few. I'd say that this place is probably only good for people with kids that just want an easy 9-5 so they can get home to their families or someone who's about to have a baby and go on maternity/paternity leave. Other than that, the location is convenient as it's right in the middle of the city.
Cons
Where do you even start? There is a lot of churn, especially with the sales team. I'm not sure if this is because people can't sell the product and are not hitting their numbers or simply because people just want to leave, but it happens a lot. Politics seems to also play quite a role here, especially when egos get in the way. There are some talented engineers, but I've heard some code bashing in my short time here. When it comes to people leaving, the things I've been told from old coworkers make it seem like the company cares very little about their employees. Those who were let go commonly complain about the meager severance package, and sometimes the circumstances seem a bit shady. We rarely hear about any exits, even those of executive staff. Lastly, I would say that there is a distinct lack of culture here. About a year ago, we acquired a startup called Klout. Klout was filled with young, energetic employees and it seemed like it was an earnest attempt to not only bolster product offerings from Lithium, but also to inject some youth and culture into the company. Sadly, within 4 months, most of this had been stomped out. I'm not sure how many are left, but I think almost all of those employees have left Lithium (it's worth noting that there was an earlier acquisition of a team in Austin, but instead of coming to SF, they were allowed to remain a satellite office and they seemed to have maintained their company culture).