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Darwin a better name than Wallace? Sir-C. Ambrogi Lorenzini (Nature 384, 508; 1996) highlights the possibility that double-barrelled names may be incorrectly listed in publication databases. This is an important issue because citation rates are increasingly used to assess the value of research. But it is not only those with unusual names who may get a raw deal out of citation indices. Investigation of the relationship between alphabetical position of surname and citation rate reveals that researchers nearer to Darwin may appear to be making a bigger contribution than those nearer Wallace. The number of papers published by authors of a particular surname initial for 1994 was taken from the on-line Science Citation Index (SCI). Citation rates by initial are not easily gleaned from this source, so I measured the number of column centimetres of citations in the paper version of the 1994 SCI. Comparison of these data reveals a clear decrease in citations per publication with surname initial (linear regression r = 0.33, F= 12.04, P< 0.002). An obvious

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The most popular websites on complementary and alternative medicine for cancer offer information of extremely variable quality. Many endorse unproven therapies and some are outright dangerous.