While I think texting is convienient for alot of reasons, I don't quite understand why people use it to avoid working on their conversational skills.
Using texts and IMs as an alternative method of communication because there is no other option is one thing. (i.e., you're at work and can't talk on the phone), but it shouldn't be your ONLY means of flirting with a potential partner. And it shouldn't take the place of a real conversation.
If you have this girl's number, call her. To be honest, when a guy flirts with me via text, I feel like he's hiding. I have much more respect for someone who calls me outright. Or better yet, just asks me out. That's much gutsier.
“Inside every cynical person, there is a disappointed idealist”--George Carlin