You write favorite "small business," then write "restaurant." I am not sure which is your focus.
In either case, I give positive feedback by patronizing the business again and again. I have given a huge amount of business to a particular dry cleaner over the years, for example.
If I have a terrible experience, like I have had at some PA restaurants, then the negative feedback is that I never return there.

To elaborate, in my experience complaining at restaurants doesn't really resolve terrible service, so I take my business elsewhere. I certainly have received far superior service in other metropolitan areas in the U.S.

Go back frequently. Get to know the staff. Tell them how much you like the place.

Is this a genuine "I would like to know" question - or are you trying to get people to go to your website?

I just dont even waste my time giving feedback

not sure what the original question and post was as it seems it might have been self-serving, and now dated, but... the best way to give feedback is to actually do it in person to the manager or owner. Some of us will go out of our way to make our business successful and will listen and either politely tell you that you have no idea what you're talking about, or make changes. In my restaurant we remove the food item from the tab if the customer complains (note: it makes us less willing to do that, if there's only a bit of food left and you said nothing the whole time!) Bottom line, open and honest communication.