SOAP Web Services around still frequently used in a lot of large corporations, where technology evolves a little slower and Microsoft products are still very popular.
Being a Rails fan myself, I have always enjoyed using HTTP Web Services and interacting with tech companies' Restful APIs so easily.
This post provided a clear, side-by-side comparison of the technologies including the historical context of SOAP, which I found really useful and enlightening. If I could give you some Bitcoin for writing it, I would. Have a new Twitter follower instead.
It's hard to find succinct, objective technology articles in this day and age. Most reviews I find are either unconstructively biased ("dynamic typing sucks!") or too long and convoluted to be effective.