Doesn't this sort of defeat the purpose of social 'Networking' if you do it for them?
Also, you are getting into a situation where your income will stagnate. You only have so much time and the value of your service will drop over time due to inflation and changes in the market.
AND, I have not seen any evidense the average small business is willing to pay much for an online presence yet. They just don't have the cash to play with anymore and you will get into the situation of spending way too much time for what they 'perceive' the value of the service is worth.
It would defeat the purpose. However, I have been approached by the absent owner of a doggie daycare who has a manager and staff, but no time to keep up posts and he wants to join in on the rave.
If this is a way of generating business for them and me then I am all for it. I am well connected with my phone apps and with today's technology it will only take a few minutes for me to zap something on there and for it to spider to all the locations.
I was thinking $5.00 a day with a few responses or likes to the fans. Having them sign a 3 month contract and assess the situation before renewal.