Are Greek local governments moving towards e-government 2.0 model? What are the factors that impact adoption of Web 2.0 tools? What is the effectiveness of these tools in terms of citizens' awareness, interest, and engagement? The present study addresses these questions by investigating the usage and effectiveness of Web 2.0 applications employed by the 325 Greek local governments. Results indicate that local authorities in Greece are moving towards an e-government 2.0 era, albeit slowly. Local governments originating from municipalities with a large number of educated inhabitants who have made use of e-government services are more likely to be adopters of Web 2.0 tools. In addition, fi ndings suggest that Greek citizens are beginning to be more aware of the Facebook pages of their local governments while they seem more interested in their YouTube channels. Hopefully, local governments can increase their citizens' engagement by being active on Facebook. Offi cials of local governments should increase their presence on social media such as Facebook and YouTube but their strategies should be differentiated for each social medium in order to benefi t from their potential.