I've had mixed results, at best.  For the gals that show an obvious preference for phone appointments, I send the request for verification purposes and then go right ahead and call.  

I have also gotten confirmed appointments with no hassle at all after using just the 411 request.  

Also, look at how many OK's you have.  Some gals seem to put a lot of stock in that.  

Lastly, the requests that the gal gets all have exactly the same subject line.  So I suspect sometimes they get lost in the shuffle.

I love a Preferred411 request because

the gentleman is already verified if he has an OK or two.

It's less work for me, and on to the fun stuff.

Definitely not a waste of time.

Hugs,
D.

I've used P411 requests with reasonable success. I like the fact that the provider okays are associated with my ID and as the ladies have suggested it can make things easier for them also.

By no means 100% but it has worked well.

P411 typically is a great site and good way to get confirmed by the ladies. But just like any other site...it is only as good as the ladies that keep up with the responses.