I know people talk a lot about having actual relationships with your followers and the funny thing is I do! I spend an inordinate amount of time interacting with my twitter followers and I'm really starting to question why since I get less reward out of my efforts!
Some business ideas, whether they be services or products will take off and do well with a little prodding, others will produce limited results or none at all.
If you find yourself fighting to gain more interest and you are not getting the results you want, you may have found the limit that product or service will give you. That is ok. Then either experiment with tweaking it, change it in some way or try another idea.
All the effort spent in social marketing won't change the results of a business if the idea isn't filling a need to the point you want it to fill.