@Ragman,
I wouldn't worry too much Ragman, someone with OCD spends an inordinate amount of time stalking particular posters, just so he/she can thumb down their posts. I remember Chai2 complained of being stalked like that. I've seen hints that others have experienced it. And I've experienced it.
At the start you think it's just weird that anyone could bother, and as it goes on, eventually you realise the person must have severe personal issues, and then it becomes meaningless.
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As a matter of curiosity though, I just went through my list of followers (thankfully not long), to see if I could find someone following us both. I found an interesting fellow, jefferadkins, who is also a follower of yourself, and numerous other a2k'ers.
What's interesting about this gentleman is he only has 11 posts, no answers to questions. All his 'questions' are one liners, all non related to the major posting forums of those he's following.
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I'm guessing that you can set up an alert for when those you follow submit a post.