If you store it in db, the db will grow quickly and will be much, much larger. It is just a touch more complicated to get an image out of db for display then to it is to get it from a file system. On the other hand, you better make sure that the file names and paths do not get out of sync with what is stored in db. In the past i have chosen to store on disk instead of db. It made it easier for me do move the database to different boxes. Worked out well.
