If you want to create your own reviews there are a few things you can do. For me, I have an 10in Acer old Windowz 98 laptop that has nothing installed that I just use for Internet. What I do is carry it with me, and when I am out and a place has free WiFi, I clear all the cookies and temp files from the laptop, create a Hotmail, Gmail, or Yahoo account and leave a review. I do it about once every few weeks so it does not look obviousl. There is a tattoo studio in town who was obviously cheating and wrote themselves 30 reviews in less than a couple days. Google kicked them off.
Another thing also if you have cable internet and a wireless modem (works for Shaw Cable in Canada), is to login to your wireless modem and reset up wireless, but change your MAC address. Then restart the modem, unplug the cable for about a minute and when it goes back online, if you check at whatsmyip or another site, you have a new IP address. Again, clear your cookies, ect, and your good for another review.