I was a member of a local branch of BNI for a couple of years and think it has its advantages and disadvantages. However, it can depend on your personality and the other members in the group.
It's true that they only allow one person per industry. However, there is a lot of crossover; i.e., a 'printer' will also do design and a designer may also do 'print'. Likewise, a 'joiner' will do roofing and a 'roofer' may also do joinery, etc. This can cause confusion, underhand dealing and potentially conflict.
There is a lot of pressure to bring in 'referrals' where during your conversation with a client about their letterheads and logo design, you feel that you have to say something like "Talking about letterheads and logos, do you need any carpets fitted in your gran's bathroom, and I notice that you're a bit overweight. I have a colleague that can help you lose weight with this new and improved diet pill". I'm afraid, I couldn't and wouldn't shoehorn these things in.
Every week, everyone has to stand up and say what they've done to bring in business for the members of the group. If you don't have anything for someone else, it's a black mark against you. These 'black marks' are routinely brought up in some form of league table to show who is and isn't pulling their weight in the group.
Unfortunately, the members of my particular group mostly gave me referrals that led to time-wasting, and/or a job that wasn't worth doing.
Some businesses seem to do well. Web designer, car mechanics and handypersons. However, more specialised industries struggle, and this shows in the turnover and fluctuation of members in some groups.
If you or someone decides to leave, all the other members are pressured into switch their allegance to someone else in another group while trying to replace you with someone else. So, not very good for making long term acquaintances.
I did make 2 or 3 long-lasting clients (who incidentally left too), but in the big scheme of things, wasn't really worth it.
There is a general feeling of being treated like a child and that you're a member of some sort of cult. They occasionally have conferences where a motivational speaker (guru) will tell you how great they are, how you should be leading your life, and how grateful you should be that you're a member of the greatest business networking organisation in the world.
I could write a screed of stuff about them, but this is the gist.
