"Methods can also have the property of "idempotence" in that ... the side-effects of N > 0 identical requests is the same as for a single request." [1] The HTT

"Methods can also have the property of "idempotence" in that ... the side-effects of N > 0 identical requests is the same as for a single request." [1] The HTTP spec clearly talks in terms of the effect of sequences of repeated operations, not in terms of the results of individual operations. The side effects of a single logout are the same as for 6 - you are logged out and whatever logout triggers exist are executed once. [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1.2 http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.1...