I agree with Rebecka and Tess, no, I would not be offended if the request was phrased properly.
However, a differing scenario is this: I was contacted via PM by another VA indicating she had some pertinent information regarding our particular specialty and would I be interested in learning more? I was familiar with this VA and said sure, no problem and sent her my email address as asked. Next thing I know I am getting repeated emails from her asking me to read her latest blog postings (which have nothing to do with our specialty) and am now getting inundated with requests to join various social networking groups from her.
As far as I am concerned , she misrepresented her request for my email address and if she simply wanted a membership list for her blog she should have worded the request as such. I probably would have gladly subscribed to a mailing list for a new VA blog, but the manner in which she obtained my address was underhanded and has resulted in my boycotting anything she writes. Not the result I suspect she was aiming for.