If you are the owner of a Hotmail email account and a Blackberry (I own neither, but my uncle had the former for years and acquired the latter a couple of weeks ago to get his emails faster) you may have already tried forwarding your mail from one to the other, perhaps because the person at the store told you it works with *all* web mail services (as was the case with my uncle), merely to discover the sad truth: it doesn't!
Open source to the rescue. After a bit of looking around I found this great little POP3 server proxy called FreePOPs. What this great little program does, is it allows you to retrieve your free web mail messages with any application or device that supports the POP protocol (including a Blackberry). The best part is that it works with most popular free web mail providers out of the box (and some less popular ones too) and it is extensible, so in theory support could be easily added for almost any service. It's also very light and very much in the background.
While this is an easy way to get your Hotmail messages on your Blackberry, it can also be used to get them in your Gmail inbox. Gmail's options include retrieving emails from a different account that supports POP3 access. The only downside with Gmail's POP retrieval is that you don't get to control how often it checks - which at times could mean as long as an hour between checks. Still, it sure beats paying for Hotmail Plus just to be able to forward your mail.
Pesky email problems like these are all too common, which is also why I'm posting this up in the hopes that this might be of some use to people out there looking for a similar solution.
You can find a download link for the program as well as more info right here.