Based on the answers of the 50 respondents that had previously used code smell related tools, we analyzed their responses with respect to the usefulness of code smells. Approximately half of the developers expressed that code smells/anti-patterns can be either moderately or extremely useful for conducting different activities in a project (Figure 8). The overall distribution was quite balanced with two activities scoring a bit better: 29 (60%) of the developers responded that code smells and anti-patterns can be moderately or extremely useful for Code Inspection, and 33 (66%) responded that they can be moderately or extremely useful for Error Prediction.