I just spent upwards of two hours manually deleting a whole ton of spam comments that built up mysteriously while I was off the Internet for the better part of last year.
Granted, I was also doing some other (more useful, less onerous) things at the time as well, but still. By the end I was doing it by rote and was astonished to discover that there was nothing left to delete. I thought something had gone wrong.
Oddly, the spam was mostly concentrated on certain posts. Posting On Sleep Deprivation had a little under a hundred comments sporting porn, herbal remedies, and mysterious messages in Russian. Meanwhile, my brief and inane post on Twitter generated nearly that amount in Japanese-language spam.
Why? Only the Blogger deities know. Though maybe if I spoke Russian or Japanese, I'd be closer to an answer.