I consider myself pretty savvy to tricks people use to scam and phish on the internet, but I've recently come upon something that has me baffled.  For the last several weeks, I've been receiving comments on my blog posts that at first glance seem like compliments, but they really don't relate to anything in the actual blog post itself.  And I can't for the life of me figure out what purpose these odd, random comments serve!  There are no links listed, no services mentioned, just bizarre and vague comments that are typically grammatically incorrect.

Here are a few of the most recent ones:

• Thanks for such a nice post. (blog post was about email retention, so nice?)
• Where else could anyone get that kind of information in such a perfect way of presentation. (what does this even mean!)
• That is some inspirational stuff. Never knew that opinions could be this varied. Thanks for all the enthusiasm to offer such helpful information here. (blog post was about how the emoticon got started)
• I want to express my admiration of your writing skill and ability to make reader to read the while thing to the end (umm, what?)
• Excellent read, I just passed this onto a colleague who was doing a little research on that. And he actually bought me lunch because I found it for him smile So let me rephrase that: Thanks for lunch! (this one doesn't seem too bad at first, except that I've had this exact same comment left on 6 different occassions)

Has anyone else had this happen on their blog?  What do you think is the point?  I'm just super confused, so any insight is greatly appreciated.