All of them make you money and they all have referral programs. Sign up today. I recommend you set up a bookmark for this purpose and set VirtualStartPage to your home page. You start getting paid for searches from the site soon, they had to delay the release of this feature. Getting paid for e- mail is in the works too.
Home page is user friendly.
No downloads required. The percentages should apply to the new programs also. No downloads required even for Virtual Bar. They have an ad bar too which pays appx. The ad bar is now available to everyone upon signing up.