Something that I was reaffirmed by at SXSW was the community of sharing that exists. It's a really powerful force that makes the web a great place to be and makes me happy to have a career involving the web.
I just finished reading the 7 Habits of Highly Effective People and one of the things the author talks about is the abundance mentality. As explained in the book, it's understanding that there's enough for everybody. Others do not have to lose in order for you to succeed. You're always working towards a Win/Win situation, whether that's between you and a co-worker, between you and a client, or even between you and your family.
The web design and development community that I consider myself to be a part of really enforces that ideal. The more you share, the more successful you'll become. That's a really powerful concept.
I remember back at one company I worked for, the discussion of whether to include a portfolio came up. Much concern came over whether the competition would use it to harpoon clients. It was suggested that potential clients require a login to review the portfolio. It was all about putting up barriers. Barriers to the competition and sadly, barriers to potential clients.
When somebody asks me who my competition is, I honestly have to answer that I don't have any. I'm not fighting for bids, having to undercut competitors to get some work. Instead, the work keeps coming in. Often times, it's overflow from those who might otherwise be considered my competition. And likewise, whenever I can't take on new work, I refer people on to others.
If you've got something you know, spread that knowledge around. It might be on design, on development, on business, or whatever. Share your knowledge.
I'd personally like to see more "running a business" insights. Ryan Carson has done a good job of covering the behind-the-scenes of building, maintaining and selling an app. If you have more links to similar resources, I'd love to see them.