I joined Public Mobile last week and it has been great so far! Though I know there are some glitches in My Account area but voice, text, and data pieces are working so well! Just like Telus (I know PM is riding on Telus network) that was where I came from 
No problem in helping my friends in porting numbers and getting a new phone number (by the way, you can even chose your last 4 digits, if you want a new number!). Everything was very smooth.
The best things I recommend are:
1. Clear your cookies/temp files before you start activate SIM. No problem with Safari browser, not sure IE/Firefox...
2. Make sure you click your mouse cleanly everytime you continue. i.e. One-click at a time and don't rush in typing out of your infomation. If you think you have to go back, it might be better to re-start from step 1 again. Better safe than sorry!
3. Enjoy!
