Today's world is ever changing. SMS (text messaging on mobile phones) and other technologies are changing how we interact with one another. How should tools like SMS fit into your dating toolkit?
I feel that using SMS early on in a relationship (like asking for a first date) is not really the strongest option. Whilst you may succeed, and in some cases your opposite number may also be relieved, they are likely to see using SMS as a sign of weakness.
Whilst somewhat daunting to many, the best option is to try ask for a date in person. If you must use the phone, talking on it is the better option than using SMS.