I for one am in the process of ditching Protecteer's Sign up Shield. The main reason is that it still announces that it supports Firefox 3. For Goodness sake protecteer I am using Firefox 15.0.1. Sign up shield will not work with fire fox 15.

I have moved to Keepass Password Safe which is free and does exactly what Sign up Shield does/did.

I had a problem over a year ago when I renewed my license number for the disposable email address, problem was I had already renewed it as a result of a reminder about a month earlier, so I had effectively renewed it twice. Each time I contacted them I was asked to give the serial numbers that appeared in the "help about" of course they were all valid and they just could not or would not understand that I would not need more than one license for this function. They refused to refund me £12.50 and that started the end of my love affair with them. They claim 32,000,000 that's 32 million shipped or downloaded. A lot of money for them to get pickey about £12.50. I too liked the disposable email function but you know Yahoo have the same function if you want to look into it and you might want to investigate keepass too.