By some estimates, spam now comprises nearly 2/3 of all email sent. How will you keep your inbox clean from unwanted spam? There are various software options out there to deal with the spam problem - some rely on a white list in which trusted senders of email need to identify themselves, others try and identify characteristics of unwanted email and filter those emails out. Each spam fighting system has its benefits and negatives. Use this section to rate and review your anti spam software of choice.