1- referencing a blog in a blog. If you run wordpress there are several plugins that allow for easy to linking to the other site. Otherwise you are using a standard HTML link. You can increase readership by using a trackback comment on the site you are pointing at (if the other site has a trackback field, which is usually in the comment area)
2- BlogLines - you should download the bloglines browser toolbar- Bloglines Toolbar Subscriber
It will auto-detect most RSS feeds and subscribe it to your account.
3- Spellcheck. Download the Google toolbar and it has a spellcheck feature. Google Toolbar with Spellcheck

