So… There are three different tricks to registering your gmail address over and over at the same site without it being rejected as “Already Registered”
Use @googlemail.com instead of @gmail.com
Both domains will send email to your email address. So, my email address: joey.novak@gmail.com is also joey.novak@googlemail.com
Put dots in your username whereever you want
No lie, Google just strips out all the dots before it delivers email to you. So, jo.eynovak@gmail.com is the same as joey.novak@gmail.com. I use this at work to test things ALL the time. You can even use LOTS of dots. So, j………………..oeynovak@gmail.com will get to me too.
Put a + at the end of your username and put whatever you want after it.
joey.novak+test123@gmail.com is the same as joey.novak@gmail.com This one isn’t as good as the other two, because some sites (facebook cough cough…) say “This isn’t a valid email address” even though it works at other places fine.
Conclusion
So that’s it! Now go sign up for free trials again and again at: https://www.copilot.com/, or https://secure.logmeinrescue.com/HelpDesk/Home.aspx?home=2&lang=en
Enjoy!!