For mozzila firefox users, who blog with wordpress…
…I recommend installing the ‘Google Gears‘ plug-in (click ‘Turbo’ in your WordPress dashboard – sorry not available for wordpress.com users!), which (when enabled) stores all the little images and things that you otherwise have to download each time you change pages. This not only saves bandwith, but should considerably speed up your ‘dashboard time’ (even if you have a pretty fast internet connection?).
While I’m at it, I also recommend the AdBlock Plus (blocks many/most advertisements) plug-in and the Zotero (bibliography/referencing tool) plug-in.