Yesterday, I added the following special deal in my service web site :
Help us promoting the site (blogging/tweetting about it, sharing the link in facebook, google+, delicious,… and committing to write a testimonial at the end) and get 5% off in the cost of the basic package
I'd be interested in knowing if you think this is a good strategy and, specially, if any of you has tried something similar and whether it worked or not in his/her case.
(I elaborate a little bit more on why/how I decided to go for this option here in case somebody wants to read more)