We are now unable to continue hosting the Triople block checker, mainly due to technical and performance reasons, at times it can be a real drag on the server. Instead, the source code will be released very shortly, so check back soon if you are into PHP.
As another reminded, the method Triople used for block checking accurately was patched on the servers in January 2004, so if the user you are checking has the “All others” item on the block list in their privacy options then it will always show them as offline. We suggest using Online Status Indicator for MSN Messenger as a replacement of Triople, it uses the same method, but has multiple mirrors and is more stable. Quick fact: since June 2003, Triople served more than 25,000,000 checks!
To use OSI, just use a URL like this: http://public.hmstudios.net:8080/msn/user@hotmail.com and it will show an image indicating whether they are online or offline. Good luck!