I am having a website built that has questions and answers as a large component and feature center. Is there currently any well established patents that I should know about that would potentially be a problem? While putting the ideas together I intentionally stayed off of other sites that had this type of feature set so that it would not hinder my creativity. Only now am I venturing out to see what is out there. With that said though I don't want to find out after it is built that it has to be changed to accommodate any existing patents like how it is displayed or the algorithm by which the questions are sorted to the answerers.
Any help anyone can provide is much appreciated.