Web 2.0 has led to an ever-increasing amount of data online from both professional producers and consumers. This data is highly valuable to many web applications but some fear we may drown in data. Web 2.0 also utilizes the "wisdom of crowds" where large groups of internet users can collaboratively create accurate information like on Wikipedia. Many web 2.0 sites also use open collaboration models like wikis and blogs that allow open participation. As more people use networks, their value increases through network effects and users are more likely to find useful information due to power laws and the long tail effect.