The answer is pretty obvious to some users, but TD is growing pretty fast!

I stole these numbers because i couldn't find the stats, so here is:

TD start to have dead torrents at this page:
TorrentDay - Your Key To The Scene

so it's about 79k active torrents and 3k dead torrents

IPT at this page:
IPTorrents

234275 total torrents. Considering that it's 50 torrents per page, and the dead torrents start to appear after this page, that's 171.750 active torrents versus 62,525 dead torrents..

Feel free to correct me