To find the right people I downloaded a list of some of the most popular users within the community. To do this, I used Screaming Frog SEO Spider to gather a list of all the URLs on the website. I then exported this list into an Excel spreadsheet and filtered the URLs to only show those that were user profile pages. I could do this because all of the profile pages had /user/ within the URL.
The Challenge is open to higher education students from undergraduate or graduate programs, regardless of major. Students must form teams of 2-5 members and register under a verified faculty member, lecturer or instructor currently employed by an accredited higher education institute. Google will partner student teams with select nonprofits that are a part of the Ad Grants program and have opted in to participate in the Challenge.
Clients often ask me the difference and I give them a simple answer that normally puts an end to the conversation and their questions, much like the answer shane thomas gave, but less detailed.  Direct is people putting in your url in the top and organic is people searching for you.  Here is an example: If I want to buy a book i type in (direct traffic) but if i forgot where to buy a book online i search for "where to buy a book online" which directs me to (organic traffic).  When i explain it like this, a light bulb goes off and they understand.  Hope that helps.
I agree with the point that a small or medium-sized business will have limits for budget and resources in generating brand search, but I wouldn't say that stops them from potentially producing huge growth there if they do something interesting/innovative etc. I can think of quite a few small to medium sized brands that have more name recognition than larger companies in their space. The challenge is that many of those brands are led by people who are very good at generating marketing and publicity - it's harder for small brands to be able to afford to pay for a top level consultant or agency.
Well, yes and no. Sure, you can get hit with an algorithm change or penalty that destroys all your traffic. However, if you have good people who know what they are doing, this is not likely to happen, and if it does, it is easy (in most cases) to get your visits back. Panda and Penguin are another story, but if you get hit by those it is typically not accidental.