This paper is an overview of the state of the art in providing access to in-situ data from multiple observing systems over the internet. Describes reasons for success or failure of technologies, in the spirit of Dr. Richard Feynman:

"It's a kind of scientific integrity, a principle of scientific thought that corresponds to a kind of utter honesty--a kind of leaning over backwards. For example, if you're doing an experiment, you should report everything that you think might make it invalid--not only what you think is right about it: other causes that could possibly explain your results; and things you thought of that you've eliminated by some other experiment, and how they worked--to make sure the other fellow can tell they have been eliminated." -- Richard Feynman, From a Caltech commencement address given in 1974 and also in Surely You're Joking, Mr. Feynman!