Ohloh uses project tags to determine relationships between projects.
These guidelines will help you get the best results when adding tags to a project:
A large number of tags usually won't improve project matches. Vague tags like "computer" and "software" are mostly ignored by our matching algorithm.
All tags are required to use lower case only.
We allow some special characters, but your tags will be simpler if you avoid them.
Choose "database", not "databases", unless it's clear that everyone else has settled on the plural.
The Ohloh analysis system knows which languages were used to create each project, so don't bother putting a "c++" tag on a project unless the project deals with C++ in a very particular way — for instance, if the project is a C++ compiler.