Don't do it! It's too good to be true!
I am a longtime Earthlink customer and invariably something goes wrong with my DSL about once a year. Last year, the service was mysteriously taken off my phone line and it took weeks and many phone calls to get the situation rectified. I should have changed ISPs then, but I didn't want to be inconvenienced.
My service has been steady ever since, and of course, I bit when I saw this ad. It seemed like a great deal. One Earthlink rep told us it was not available to us, and another told us we were eligible to participate. So the order was placed and a few weeks later, our phone service went out and phone calls were diverted to a voicemail account. However, our phone in our house never rang. After about five days of phone calls and promises from Earthlink, they finally told us that this service was NOT available in our area and they are now promising to restore our phone service at no charge. I hope this is true, but I am not holding my breath. This has been a truly frustrating experience and a huge waste of time... this time for my husband who's been dealing with all of this... and I will never recommend this company again unless a minor miracle occurs. I am seriously considering moving to another ISP even though it would be highly incovenient. Argh.