For starters you are not allowed to solicit affiliates through PM's, and second this is a horrible approach.
You can be as sweet as pie and say all sorts of nice things but this is not how you effectively recruit JV's.
I also get lots of Skype requests and I am totally OK with that. I have met some awesome people this way, but most people are only thinking about how they can get some money in their pocket right now, and that approach isn't going to get you anywhere.
If you want to effectively recruit JV partners here is how to do it:
Hit them up on Skype
Build a relationship
Do not ask them to promote your product unless you are giving something first
If someone wants to work with me in a mutually beneficial business relationship then I am all for that. I am more than happy to partner up with people who truly want to work as partners, and I don't mean work as your affiliate.
If you dive right into "promote my product" or "What is in it for me?" then your not going to make the kind of progress that you should.
You need to always keep in mind "What is in it for them?"
Recently I partnered up with a few people for a WSO, and since I developed a relationship with these people while working with them they are the first people I think of when I need a service I am willing to pay for.
I needed some sites designed, so I asked my new partner "How much?" and he offers to do it for free.
Well Damn! I love this guy now. So when he tells me about the product he has created I am thinking "I would love to promote your product - your my buddy".
So then what I often do is offer something to enhance their product, and time and time again people are so grateful for this that it just makes the relationship more awesome, and it usually comes back to me ten fold.
Giving without expecting anything in return is a basic principal but it is powerful.
With all of the people who have asked me to promote as an affiliate has a single person offered me a review copy. Not once. Now if you did, right away I am going to feel you gave me something for nothing, and of course I will be far more likely to reciprocate.
I get plenty of people asking me for review copies and that is the worst thing you can do. Why should I give you a review copy? Why? You haven't given me a good reason too. I don't know who you are and now I think your a jacka$$.
So in short "Give and you shall receive"