The following are ten serious risk factors that will effect a SharePoint project:
1) Having inaccurate metrics
2) Having inadequate measurements
3) Having schedule-based pressure
4) Having management issues
5) Having inaccurate cost estimates
6) Having the need to have everything perfect before launching
7) Having a creep in user requirements
8) Having low quality content and code
9) Having low productivity from core team members
10) Having the project cancelled