A reader wrote in with a few interesting iTunes questions I thought I'd throw out to the group. I'll take a shot at the questions, but would appreciate some additional takes.

1. There are at least three computers that I use on a regular basis, our family computer, my work computer and my laptop, when I travel.  I have tried to figure out how to have my subscriptions be the same on each computer.  By this I mean that I thought Itunes would be a web based program that when I signed in to my account my menu of my podcasts and subscriptions would be the same no matter what computer I was using.  This is not the case.  Each Itunes library is linked to each computer not to my account at Itunes.  Have I missed something? Is there a place I can see where all my subscriptions are?
Your iTunes subscriptions are tracked within a file called "iTunes Music Library.xml" which resides on your computer. This file tracks both your music files and your podcast subscriptions. It's not web-based, so you are correct when you state that, "each iTunes library is linked to each computer."

2. I don't even bring my connector cord to work anymore, even to re-charge the battery, because it starts up Itunes and if I have forgotten to turn off the auto upload, I have replaced what was already on there.  Is there anyway to keep a list of the podcasts I have downloaded, or have subscribed to other than in the notes section on my blackberry?

Your iPod is basically a satellite of one computer. Just like satellites only orbit around one planet, iPods only orbit around one computer. Syncing the same iPod with more than one computer is going to create a mess since the library files are not synced.

If there are podcasts you plan to listen to from your computer rather than on the road (at work or home), you could subscribe to them with something other than iTunes, such as Google Reader. They won't auto-download, but that's not really critical with podcasts since they'll start to play immediately when clicked on unless you're on dial-up. Using a web based RSS reader like this would allow you to keep your podcast listening in sync at all computers since it's, well, web based. Here's a link to Technology Evangelist's podcast feed for insertion into Google Reader you can use to test this out. You can play the files immediately online, or download them to your computer if you want to play them when you're offline or to sync into iTunes.

3. "Where would I find information on how to download podcasts to my ipod from sites other than itunes?"
By this, I assume you mean subscribing to podcasts in iTunes that you didn't find through the iTunes Music Store. One way to do this is by clicking on the RSS icon for a podcast. If you happen to use FireFox, this will take you to a subscription page that lets you choose which RSS reader you'd like to use to subscribe to the show. If it's a podcast, iTunes would be a good choice. To give this a try, click here for Technology Evangelist's podcast feed.
4. Is there a way on Itunes, or any other podcast sites, to search for videocasts?"

Click iTunes Story > Podcasts > Then scroll down to "Featured Video Podcasts" to find many popular options. iTunes could certainly do a better job differentiating which podcasts are video vs. audio than to they do today. Other options including video blog directory sites. Here are five to try.

To me, it sounds like your best bet is to pick one of your computers to use as your podcasting base station. Sync with that when you get a chance. If that computer isn't your work computer, use your iPod during the day or listen to podcasts through non-iTunes RSS readers like Google Reader.