After Effects offers awesome text animation possibilities. It also offers SWF output until now, however, text was always rasterized, which increased file size and prevented user scaling. With the release of AE 6.5, text layers can now be exported as vectors when going to SWF.
Choose File>Export>Macromedia Flash (SWF).
Raster filters, Motion Blur and Fill Over Stroke will still go out as rasterized type.