Social bookmarking is an excellent way to get traffic to your squeeze page and sign-ups to your list. There are many different social bookmarking websites out there, like Digg, Delicious, and Stumble Upon.

Here's a great resource for social bookmarking sites.

You'll not only get backlinks to your website by bookmarking, but you also get the benefit of people in your niche clicking through when they find your info.

Keep in mind that the traffic from these websites is not always super-targeted, but it is well worth it to sign up for these accounts. Bookmarking doesn't have to be a daily task. Simply bookmark your best content every once in a while. It can increase your opt-ins a variety of different ways.