Can I stop websites from tracking me through HTML5?

Update: I think I may have found what I was looking for. Posted in Edit 3.

I know this isn't a tech forum, but I know there are some users here that know a decent amount about these sort of things.

I try to do what I can, within reason, to stop sites from tracking me.

Clear history, cookies, and all other options available everytime I close my browser.
User an adblocker with numerous lists including privacy, tracking lists, and social blocking.
Enable do not track setting in browser and disable 3rd party cookies.

I also have a batch file that I made that deletes and recreates a few folders and I use this every once in a while. I created this because I found that Flash was storing information on all the sites I visit, like it's own cookies, and it never gets deleted, so I wanted to manually clear it every once in a while.

Now that pretty much all sites have switched to HTML5, I was wondering if there is something I can do to prevent websites from tracking me through HTML5. Whether there is a setting I can change to not allow them to collect certain information through it or if HTML5 keeps it's own information somewhere on my computer like Flash does and I can manually clear it once in a while.

I am interested because even after doing all that I do, there are still websites that identify me. One of these sites is volafile.org. Even though I clear everything I listed above and the last few digits of my IP address changes, every time I visit the site, it recognizes me and shows my previous conversation in chat from months ago. I don't even have an account on the site and just post anonymously.

Edit: I was just doing some reading on canvas fingerprinting and found that there are some add-ons that will let you send fake information. Does anyone have any experience with these? Do you think they are safe or even work?

Edit 2: I just installed Canvas Defender for Firefox and Volafile is still able to identify me. I'm guessing they are using a local HTML5 cookie that is being stored on my computer and not deleted by my browser.

Edit 3: I just found the folder where Firefox permanently saves information that does not get deleted through the browser and was able to delete the information that Volafile was using to "remember" me. The folder in Win 7 is: C:\Users\ your username \AppData\Roaming\Mozilla\Firefox\Profiles\ your Firefox profile \storage\default

I really don't understand why these files aren't deleted when they give you a check box that specifically says "offline website data" when you clear your history. Have a look for yourself what it saved in this folder. I will be deleting everything in it on a regular basis from now on. You may also want to clear the temporary folder since it is not so temporary considering my folder still has stuff from last year even though I clear everything I can that the browser allows multiple times per day.

Some other folders in there that I don't like are "saved-telemetry-pings" and "datareporting". Not sure why it has any telemetry when I have telemetry disabled through about:config. I also have reporting disabled, but I guess Firefox still saves this information locally on my machine, but doesn't send it anywhere if you have reporting disabled, at least that is what I have read.

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