I am responding to Vaughan's long message (which I won't bother repeating). The AMS has set up its own citation index but we have seen that they too will not include TAC (I am not sure about Cahiers). They have a long-standing and apparently immutable prejudice against category theory and nothing can change that. As for a field as small as category theory setting up its own index, that would seem to be a non-starter. Even if we were to do it, the bureaucrats of the EC would not accept since it would be seen as self-serving. After reading that the Springer journal Homeopathy is indexed, I began to wonder if the publisher pays ISI for inclusion. I am sure that this kind of information is kept secret. (Actually, Robert Dawson has wildly exaggerated the publication of Homeopathy: the truth is that one out of every 10^{100} numbers contains one pixel of ink and the remaining issues are blank.)