I certainly agree there's nothing wrong with an email or PM to one of my hobby handles from someone I know that says "I was thinking of you and it made me smile." Made me smile, too, and raised her several places on my list.
I've never had a lady contact me out of the blue to ask if I would see her and write a review. Cudos to Drumsticks for pulling that off.
There's one travelling lady I saw once, and ever after she sends me emails every two or three months announcing she's thinking about another visit to Minnesota on a specified date range. One time I responded with a request for a date. Got no response until I finally emailed s again to see if she got my first one. Her reply was, "Sorry, there wasn't enough interest." I don't think much of that tactic. At very least, if she is going to mass mail the inquiry, she could be courteous enough to mass mail a notice the trip won't happen.
Texting is a non-issue for me, as my hobby phone is never turned on unless I am planning to use it for a visit. There are a couple travelling ladies I have seen who now send me a text with a smiley face emoticon a couple days before they are going to visit, but I've never yet seen one in time to set up a meet. So I don't mind texts, but don't recommend then, either.
Then there's phone calls. A couple months after I ventured into the hobby I was still thinking of it as a "just this once" kind of thing, and saw no need for the expense of a hobby-only, burner phone. Christmas day, sitting in the living room after the family opened presents, the phone rang, and it was a provider whose voice I recognized. Pretty drunk and wanting to get together. That was awkward conversation my whole family watching. Shut her down with "You have the wrong number" and hung up. Dang if she didn't call again. Shut that one down and turned off the phone. The very next day I was in Target buying a burner phone. And never saw her again.
So my answer to the question is it's fine to contact me if, and only if, you do so carefully and discreetely, with a full understanding of all the ways an uninvited contact could go wrong. And never by a phone call. I shudder to think what could happen if I forgot to turn off the burner phone and my SO heard it ringing in the dresser drawer. Not good. Not good at all.