I have a feeling that these are all automated posts, or just general human spam. We seem to go through phases, and this is the "I want xxx key" phase. This is the second time the Sims 2 code has been requested in a week, among others. Personally, I consider all posts which are short and contain an email address to be nothing but spam.
In the recent past we had the "how to... " phase, where we'd get a whole lot of one-line threads which were poorly written questions like "how to write DVD."