@eobox91103 I did... It's a great way to revive dying torrents, and many of the torrents you are seeding were dying and had no leechers. This is where the sudden increase in traffic came from.
As a side note, it may be worth putting a limit (throttle) on your upload speed in uTorrent. The reason for this is that in order to browse websites or really do much of anything online, you need to have at least a certain amount of upload ability available. When the connection is fully maxed out, it can create difficulties with other devices trying to use the internet normally.
If your internet speed caps out at about 25 mbit (3,051.75 KB), I would recommend capping your upload speed at about 2,450 KB/s. This will ensure that other devices on your home network have a sufficient upload capacity to be able to work on the internet without causing issues. It's a bit of a reduction, however if you have more than one device on the network, it will ensure that all devices will be able to function consistently on your network over the internet.
Just for reference, the speed calculations can be derived as follows:
1 bit = 1 bit
1 kbit = 1000 bits
1 mbit = 1000 kbits = 1,000,000 bits
1 Byte = 8 bits
1 KByte = 1024 Bytes
1 MByte = 1024 KBytes
1 GByte = 1024 MBytes
So the formula would work as follows
25 mbit x (1,000,000 bits/mbit) = 25,000,000 bits
25,000,000 bits / (8 bits/Byte) = 3,125,000 Bytes
3,125,000 Bytes / (1024 Bytes/KByte) = 3,051.75 KBytes