Two resources for finding interesting texts:

http://a.aaaarg.org/

You need to create an account/username, then you can download the texts that you see on that page. Also, there are many discussions about various ideas and thinkers, some of which are very helpful.

http://www.avaxhome.ws/ebooks

This searchable site compiles links to various free and anonymous file uploading services (like rapidshare or uploading.com) from where you can download PDFs of over 100,000 texts. They don't have everything, but there's a lot of interesting stuff in here.

Also, a friend of mine at the FU who is taking classes with David Harvey this semester has been inspired to start a blog discussion forum. Harvey gave two free, public talks in the last week, but I didn't find out in time. I'll try to post details if I find out in time, and here's the blog:

http://harveydiscussion.tumblr.com/

-abc