If nobody knows and you got your shit together, you will be fine... But, it is very important that you cannot tell anyone..mIf it is something you cannot keep to yourself and hobbit yourself, and your not legal(I am assuming), then this may not be for you.. It is a big commitment, but well worth it in the end..Peace.
...says the person posting stuff on the internet :) lol.
Seriously, though - if you're a big-timer on here (I'm not, just thinking out loud), I would strongly suggest using 1 of 2 approaches (I'll explain why after):
1.) Don't post anything at all that gives away the size of your operation. A large (maybe even mid-size) operation is what will capture the attention of the feds if they're watching.
2.) If you must post pics, info, etc. about the size of your mid/large grow, set up two accounts here and only post that stuff on one...save any posts that could somehow be associated with where/who you are for the other account (prior experiences, legal busts in the past, weird events that have happened near you recently, etc.).
Imagine you're a federal agent that has been tasked with finding a few big-ass busts to make a point to the general public and reassert your maffiaesque control over the situation. The first thing I'd do is look on a site like this for the users with the largest-looking operations, find all their posts, and see what type of info I could get together about them. The second thing I'd do is look for the heaviest posters on this site that even had mid-sized ops since I can get lots of information about them. Over thousands of posts talking about things as disparate as musical tastes, age, general info about location, previous busts, etc, you end up putting a load of information about yourself here. They pump all that info into Hal, and voila - bustatronic...
IMHO, keep it completely anonymous or don't talk about anything but the smallest grows on any *single* account!