On the one hand, I can't tell you the number of times I have whined about my yahoo email not having a convenient built-in search feature, when it seems so obvious. (Usually because I'm looking for yet another join message from yet another porn company with my randomly-assigned login and password that I have forgotten.)
On the other hand, if -spam- can't be really deleted and excluded from search, this will be a big old mess, filling up vast amounts of space (particularly virus spam) and mucking up search results (just like the real web!)
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On the other hand, if -spam- can't be really deleted and excluded from search, this will be a big old mess, filling up vast amounts of space (particularly virus spam) and mucking up search results (just like the real web!)