I like this site its pretty handy but you have to pay to get a longer time in the graphic.. my question is how do we know that it's going to last "forever"? you say lifetime but you could end the service at any time.

site says:

"The data in the graph above is limited to two weeks, due to space constraints.
If you do not visit the site for a month the data points will stop being logged.

You can unlock this "account" (UUID) for all graphs for life for 10 USD worth of coins using the link below. "

So how do you guarantee this (that it's forever)?