I know this really isn't a pro-tip, but I thought I would express my feeling towards the site anyway.
There are very few sites which I have come across which allows people to just share code snippets, or useful pieces of information which may help others get around the same sort of issue that the poster had.
There are thousands of sites which allow people to help others such as StackOverflow (and the whole StackExchange communities), forums, etc, however, there seem to be very few which are just used to expand knowledge and share information in such a great manor.
CoderWall does exactly that, it allows people to share information freely with the community which has help thousands of others.
So In conclusion, Kudos to CoderWall.