Improve: Their SourceForge "Killer" - It doesn't have any really good options, and leaves little reason to switch. Gmail - It's awesome right now, but more Ajax wouldn't hurt. Translate - Seriously the wording from Spanish sites to English is just pathetic. Adsense - Their support team for adsense is too small. They need a contact number as well ;( Add: eBay clone. Paypal clone - Both of the above are owned by eBay, and are just terrible. Hosting - They have so much b/w and are building more datacenters...why not. An OS - I think it'd be awesome to make a linux based OS that blows Ubuntu out of the water. Opera support - They help out Firefox a ton, why not Opera? Both are awesome browsers. Your thoughts?
A bigger -- and hopefully more helpful -- AdSense support team would suit me right down to the ground.
Google checkout is good, but not for sending payments to friends etc. I use it to buy for things I buy from merchants though.
I think they should improve their back link checking tool (the "link:" command) as yahoo does better in this than google.