If you've developed with SharePoint (and possibly even if you haven't) you are probably aware that it ships with a number of Web Services.  What you may not know is that you can also talk to SharePoint using RPC.  I talked about RPC nearly a year ago but haven't seen a lot done with it since then.

Most of the resources I've seen out there focus on the document upload aspects of RPC and while that's definitely a good case to use RPC, it certainly isn't the only reason.  The SharePoint Products and Technologies SDK contains a list of > 60 methods you can call using RPC and more than a few of them are worth looking into.  It also contains a page with step by step instructions for "Posting Windows SharePoint Services RPC Methods" and with a little bit of playing, you can adapt it to work with FrontPage RPC as well.

Windows SharePoint Services RPC Methods

FrontPage Server Extensions RPC Methods