We the SourceForge staff consider ourselves a part of the SourceForge community as well, so it's only natural that we would contribute to the community doc efforts.
Any community docs created by SF staff will be tagged with the label stafftips. These docs will typically cover topics that for some reason are not suitable for the official documentation (eg., a niche topic, or not officially supported). If a topic proves to be particularly popular, it may get cleaned up and moved to the official docs.
While we'll try and provide an organized table of contents of staff tips, you can also find a full listing of all the stafftips here