If you are a n900 (and n900 owners only):

If you meet the following criteria:

• Do not have GoogleVoice
• Are in the US (or other supported country if any)
• Are willing to test Dialcentral

I will give you an invite if you PM me with your email address and confirming the above requirement. I have only have 2 to give so spaces are limited. Minimal expectation is you review Dialcentral. Which thumbs up you give is up to you.