I use google voice and one thing I did was to create a vanity number which was easier to remember. I always wanted a vanity number but the ph company charged too much. so I use ##-Wizard4U to match my company name, (not sure about posting ph numbers here so I blanked it out) and now even I can remember it.
I used K7.net for a month and the company canceled the number even though I called it one time per month (required...I don't get many calls) and I foolishly had business cards printed with it. Sheesh...
But the google voice has been great. I highly recommend it.
Janine
PS There were some complaints a few weeks ago where Google voice messages were being indexed and showing up in search engine searches.
Here But I understand this has been corrected.