I am, or have been, subscribed to about every internet genealogy service ever known. I've always found a lot of good information on all of them. The problem is after awhile I don't find anything new, so I discontinue for a year or so and check back later. The coolest thing Ancestry.com ever did was add the US Census images! (Although that wasn't too fun during the dial-up days. lol.) Before that I actually had to go to the library and reel through the microfilm. That is fun, too, just a lot more time consuming.
My Mom and I inherited the genealogy bug from my Grandmother. I love to go back and read all of her typed and hand-written correspondence. Some dating back to the 1940's. I have it so easy now. I think what she would have loved about the internet is the camaraderie among fellow researchers and the sharing among cousins you never knew you had.
She has her sources pretty well recorded. 10 years ago I subscribed to a site called "Geneoalogylibrary.com" That was pre-Ancestry.com and I'm not sure if its still around or not. Probably merged with genealogy.com or Ancestry.com or maybe familytreemaker.com... on the other hand, maybe all of those are one in the same by now! Hard to keep up. Anyways, at genealogylibrary, I was able to find the exact books that she had to go to state or university libraries to find. I think I paid $9.95 per month for unlimited access. But now, a bunch of those books (AND MORE) are free to read on Google Books! It just keeps getting better.
So, at the moment, I'm not subscribed to anything. Between Genforum, Rootsweb and Googlebooks I'm all set.
I'm going to gather our own library and post what we have in case it will be of help to anyone else!