Although I greatly enjoy software development, I don't enjoy researching of social bookmarking site interfaces just to let people share my blog's content. Luckily for me, I found AddThis, an incredibly easy-to-use social bookmark widget that's compatible with more services than I could possibly imagine. It's free to use, but you have to sign up for an account at AddThis.com before you can use it. Fortunately, that free account supposedly grants you access to analytics on who bookmarks your site and how (I haven't tried it out yet).
This free web service is an incredibly easy way to add social bookmarking to your site: I had it set up on my blog in about ten minutes. Now I've got more time to devote to real programming challenges!