How many people have actually had any equipment fried due to power spikes, brownouts, etc.? I have never known anyone to lose any equipment due to these causes and I think manufacturers exaggerate the seriousness of the situation to sell these overpriced items. I have them simply because I don't have enough outlets to plug all my stuff into. As far as cleaning up video, audio, and modem signals I really doubt you would be able to notice any difference. Thoughts?