If you want to save your web hosting’s disk space usage you can do the following:

= few plugins (just choose the most important ones and also please be careful with using plugins sometimes bad plugins will mess up your blog)

= host your photos with Picasa/blogger/BlogSpot, photo bucket, Flickr and other free photo hosting site (if you want to have a pasted photo, just use the IMG SRC photo code)

= few categories and few tags (choose the most important ones)

= not much comments (or it will depend on your choice if comments are important in earning money online coz there are companies right now that pay whenever their advertisers will put their comments in some blog posts)

= empty your comment Meta and post Meta using PHPMYADMIN (if you will use this one, please don’t empty other folders)