I once thought of adding a site about electronic cigarettes maybe last year. I forget who i was talking to but we discussed it and came to the conclusion there is serious money to be made there. So in that respect I do feel its a good market. But I also read somewhere there is serious health related issues when ingesting these products (of course smoking is worse) so I decided to keep an open mind and possible do a site at a later date when i had more positive information. I also know there are law issues and it appears there is almost like a monopoly going on or rather an oligopoly of sorts where only a few major affiliate programs control the market.
If it was a bit more selective and had way more affiliate programs i may have considered it! I am not fond of oligopoly structures unless I am part of it!! HAHA!!