it's very easy, you only need some credits for each site that can give URL links in tinyurl format from their database- all sites automatically redirects your request directly through them without giving any access at first place; they have many filters against malicious urls, so if something weird happens just disable those rules! - not too much things but I do like when my account works better sometimes because one of such reasons is about wrong IP (or similar) address which gives me warnings or blocked by system while another reason may be server response time out error.- i've never had troubles during shortening process with them,- everything looks OK after link previewing-, i love this little software:- friendly interface-. small size file (.exe)- great price-$6 credit/month limit per website/.com/.org domains.- no other problems here what bothers usually people who using webhost services instead self hosting websites via domain names I love that it takes me directly where i want with one click, also its very secure! The only downside is having your link expire every 15 minutes which can be annoying if you are working from home or in public wifi-sits etc.. which happens quite often here at work for example while doing research over google docs/docs online (also my job), so this would make things easier than clicking all those links again when they refresh after expiration time has passed by.