Reddit reviews DarkMarket: How Hackers Became the New Mafia

I'm always suspicious of internet cafés. If not for money laundering, there's definitely dodgy stuff going on there. I'd recommend reading the book Dark Market by Misha Glenny to gain similar levels of paranoia to me.

Likewise, there are a number of really tacky looking suit shops in Holborn. I'm always amazed at how they can afford the rent, particularly as nobody has ever bought anything from them. They also tend to have a permanent closing down sale/be closed within a year and reinvented in the same place or a few doors down.