I registered there a while ago and forgot about it..until I started receiving masses spam to my bcchanger specific email address.
Well, the good news is that address is made for bcchanger only

So, you can probably just abandon it forever

I did a whois search for bcchanger.com from
WhoisXY.com and found owner details. It looks good. And i visited the site
ScamAdViser.com it showed "High Trust Rating. This site looks safe to use." So, that site is legit. You can use it.
FYR:
https://bitcointalk.org/index.php?topic=82761.0