I use the basic Telligent Support Forum.
It is populated with so much information. What I like about the Support Forum is; I can find solutions or ideas to solve solutions that range from basic-to-advance, in terms of difficulty.
Alternatively, MarketSqr (The Company that I work for), has a daily news letter regarding procurement topics. The news is populated from across the world, from many sources.
One category is Business-2-Business Social Media. I sometimes form ideas, when reading these articles, to establish trends and to help my own community.