Did I miss something here? You say that this forum is awsome, so I am thinking that you've read many posts and have a feel for the activity level. I suppose if you post and don't recieve answers quickly enough, then you need to choose a board that is much more active. If you would like to discuss this you can send me a private message and I'll be happy to respond. For a forum such as this one is, I'd say that getting a response in 2 hours is absolutely phenomenal. I see Maren did just that with this post. I don't know how long you waited for respones for your other posts, but I do hope it wasn't too long.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.