I didn't want to register at all.
My DH and I had been living together forever, and we didn't need a toaster or pots and pans and such. DH and I also didn't want people spending additional money on wedding gifts. We really just wanted people to come share the day, and not worry about a gift.
Then...my mom and MOH weighed in, and I thought there might be some sort of wedding-related mutiny. Seriously, I have never seen women freak out that fast. I relented. I agreed to register only for formal china and stemware, since that is one of the only things we had not already bought for ourselves and probably wouldn't.
I then complicated matters by not agreeing to having a bridal shower. My nickname during planning was the "Anti-Bride".

You might be able to tell why.
In the end though, my mom, maid-of-honor and bridesmaids surprised me with a shower the day before the wedding (in Florida). I then understood the value of having some sort of registry...well, I didn't, but the bridal shower guests certainly did.
I agree, though, that it's up to your families and wedding party to inform everyone where you have registered. Although, in this day and age, I don't see the problem with putting a link on your wedding website.