Reply to "Thank you. How many tags is considered spam?"
It's not the number, it's whether the tag fits the post. If I make a post that's about bitcoin, then it doesn't make sense to use the #travel tag. Your post about is not about bitcoin, so you shouldn't use the #bitcoin tag. Make sense?
In the context of the novel, the main characters travel from Scotland, Saudi Arabia, Washington DC, Hong Kong, Goa and Indonesia.
Ok now tell me what it has to do with #bitcoin?
For starters, the search for Satoshi and his hoard is the primary inspiration.