The talk library is kinda an experimental way to easily add an API to your sites.
Also note that there is an issue with the email helper in version 0.3.0. I have fixed this issue and the new email helper will be included with version 0.4.0. If you want the fixed version before then (probably a month) just send me a PM.
It was completely meant as tongue in cheek, I hope you didn't take it the wrong way. I'm a huge fan of people who put that much hard work into a project and finally get it up and running (or released as the semantics may be). I'm a full time developer for Wordpress and Wordpress µ (sites, not the core) so when I saw your tutorial was on blogging, it just flowed forth.
If I ever get the chance I'll definitely give you real constructive feedback, but for now all I could tell you is that I scanned over the codebase and it looks pretty snazzy so far. Nice and clean, and well organized, all good things - from my initial scan, the only thing I'd suggest is that you may want to consider releasing a regular MySQL driver for your database handlers in conjunction with the MySQLi. Although MySQLi is to be preferred and most people using a framework will probably have the ability to update if they compiled without it, I developed a UAC a long time back that used strictly MySQLi until I realized half my audience wasn't so well endowed.