I wasn't really sure what to try and change on Wikipedia. It seems like there is already information about everything. I decided to take it local and punch in my high school. There wasn't much info at all concerning my alma mater, so I decided to enter in some information about the types of sports at Sullivan West Central School. I also added a section describing how football plays in its own class different from the rest of the school's sports.
Next I went to a collegiate summer league baseball team that I interned with over the summer, the Niagara Power. I don't know much about the players on the team, but I did know one thing that was missing: the mascot. I added that while almost butchering the page in the process.
Next I wanted to make a change to an athlete's page. I decided to pick on new Knick Eddie House. I always made fun of how well-groomed House was during his playing days in Boston. I added a playful comment in the "personal" section that House is one of the most well-groomed players in the NBA and that his immaculate chin strap and eye brows are the toast of the league. I saved those comments, and then thought of something else to add. Literally one minute later, my addition was removed. The other two, as of right now, still remain.
Overall, I maybe spent 20 minutes tops entering in the information. I wasn't worrying about citing because this was all information I knew to be true, including Eddie House's eyebrows. The swiftness in which my post was removed tells me a lot about how Wikipedia is trying to establish itself as a credible source of information, and that is a good thing. It is certainly the most popular of all the wikis, and it was too powerful for me.