Upload & Sell: On
There are several different types of IR conversions from places like Lifepixel (where I had mine done) and MaxMax. The most common is the Hoya R72 like filter, which passes light of wavelengths longer than 720nm but very little of less than that. Digital sensors "translate" that as mostly red pixels registering light. The images from the R72 style retain some small amount of non-red pigment. You can white balance to get a range of dramatic colors from the Raw file.
If you set it roughly like this, with intense red shades, like this one...
something_wicked_this_way_comes by Only_to_be_kind, on Flickr
Then you can leave it as is or you can Channel swap in Photoshop (Channel Mixer: Set Red Channel to 0 red and 100 blue and Blue Channel to 0 blue and 100 red), and you will get something like the blue sky versions that I posted in this thread.
Alternatively, You can set the WB cooler and get a faded Sepia kind of look like these:
The grandma's house by Only_to_be_kind, on Flickr
Train car by Only_to_be_kind, on Flickr
Enchanted forest by Only_to_be_kind, on Flickr
From time to time, I will set the white balance a couple of different ways and blend the images together. This tends to keep noise low from what would otherwise be massive color shifts. In IR, since the color palette is so truncated, you tend not to have the posterizing and ugly artifacts that would happen if you pushed saturation or color shifts in visible light photography.
Fence Line by Only_to_be_kind, on Flickr
Of course, any of these can be converted to BW, and that is the traditional way that people have seen IR. Much of Ansel Adams photos were shot with red or IR filters to give the near black skies and brighter foliage.
If you have an old camera body that you would otherwise consider selling for too little money, consider having it converted to IR (or one of the various other formats available).