A small tip for the blogging people:
It is always a pain in th *ss to get your blog look crowded, or some say alive. Especially when you just started a new blog. One thing i do is to write a small review for a paysite and put that in my sidebar, don't go writing a couple A4 with serious text, loosen up a little, think like a surfer and then write your short review. Oh well and don't copy reviews from review sites most blog surfers aren't stupid. But a review if well written (don't need to be perfectly written in English) can bring you a couple sales, much better then a plain banner.