The only way the site "remembers" you is if you allow it to place a cookie on your machine. If you block cookies from all Internet sites, you will need to login each time you close and reopen your browser, and you will only stay logged in as long as that particular browser window is open.
There may be a glitch if you are using an old bookmark to the site. Your bookmark should be to "
www.bonsainut.com". If your bookmark is "bonsainut.com" (without the www) your cookies may not work properly. Your cookie will be saved under "bonsainut.com" but the site will look for it in "
www.bonsainut.com" and not find it.