My job is definitely not the best job out there, as there is in fact very boring in certain moments and there are situations where you will be unable to do a lot of things - like telling other persons what you are working there. For instance this was the case when I was doing some marketing services (for a whole week) for an escort agency in London - so imagine how hard it is not to tell anyone what are you actually doing.
So - if you know already, Google does not really like to do adult related advertising, which means that all this industry is a little bit shady from the outside (and from teh inside as well).
There are a lot of of weird thing that happens with the advertising, as there are a lot of different companies that have their own advertising platforms, there are a lot of different procedures regarding SEO, there is a lot to debate regarding the websites that are offering pretty weird services and so on.
So, doing marketing online for an escort agency in London is definitely a very tough job - and more important than anything, the competition is willing to do things that other companies won't do.
For instance, in the SEO area there are a lot of opportunities due to the low level of optimization for the largest amount of websites in this industry, there are also a lot of opportunities regarding the content that for many niches it is simply not out there and so on.
So... this area can be very interesting as an industry, with a lot of search queries, with a lot of things that could be implemented, but unfortunately it is not always family friendly... so it can be pretty hard to work in this domain of activity.