Review:
Adobe Streamline traces raster files, and automatically converts them to line art that can be edited in vector based drawing applications compatible with Adobe Illustrator files. You can clear images before conversion for better tracing with the selection, pen, line, and eraser tools. After conversion, you can further refine the line art with the familiar vector tools.
There are three methods that can be activated alone or simultaneously in conversion (outline, centerline, and line recognition). You can also play with the noise suppression, line thinning and tolerance controls. Although it is certainly a powerful application, Adobe Streamline is starting to show its age. The last version was released in 1997, and there isn't a multiple undo/redo feature or an elliptical marquee tool for instance.
Very irritating that it doesn't support all image-files, and highly detailed pictures are out of the question with this program, Use the Flash5-vector tool for vector-solutions for web. Use Adobe Streamline only to create Illustrator paths of vector-images. Overall: great for creating Illustrator-paths of vector images.