Another Dumb Bit Torrent Question

[Kent Borg]

A few weeks ago I used bit torrent for the first time, and I felt smug
about how I gave back many more bits than I took.  (Good citizen Me!)

Time passes.

Today I am downloading something else and I am not giving back any bits. 

[...]

WAIT!!!

I was nearly finishing writing this e-mail explaining my situation in
detail when I noticed I am uploading bits!

So, having deleted my original question and boring details, let me ask a
different question: If leechers are outnumbered by seeders 2:1 (as they
seem to be in this case) might I get little to no upload traffic?  Might
I go for a hundred plus megabytes downloaded and see *no* outbound bytes??


Thanks,

-kb