Contest Url - http://www.contestblogger.com/win-100-easy-bucks-every-month-just-for-linking-to-contest-blogger/
Deadline - There is no dead line , You are eligible to win every month
Prize - 100$ Every Month
How to Enter - You just have to put a permanent link in your blog.It could be a blog post , in your side bar or in your blog roll as long as its active your eligible to win the prize.You don't have to subscribe or do anything , just link to his website about Blog Contest like I have done :)

Contest Url - http://everydayfinance.blogspot.com/2008/05/everyday-finance-250-contest-giveaway.html
Deadline - Will be revealed during the duration of the contest
Prizes -
1st Place - 100$ , A full post on the blog ( worth 100$ )
2nd Place - 25$ , One Month Text link Ad ( worth 25$ )

How to Enter
1. Sign up using a RSS reader ( 1 Entry )
2. Sign up for RSS by e-mail ( 1 Entry )
3. Blog about this contest ( 5 Entries )
4. Leave a comment about this contest on a forum ( 3 Entries )

Contest Url - http://imblogger.net/2008/05/another-contest-on-imblogger-win-600/
Deadline - 15, June 2008
Prizes -
1st Place - 300$
2nd Place - 200$
3rd Place - 100$

How to Enter-
Just subscribe to his RSS feed and make a comment using the same e-mail address and you are in.

Contest Url - http://shawnsbidness.com/blog/2008/05/16/giveaway-hosted-seo-blog-with-custom-header/
Deadline - 30,May 10PM EST
Prize -
A fully optimized Wordpress blog including the following
1. Hosting for one year
2. Keyword Research
3. Advice on picking the profitable niche for the blog
4. Complete set up of Wordpress and associated plug ins
5. Your choice of SEO Theme
6. Technical support and continued advice through the Advisory Panel
7. A custom header made by Lori of A Cowboy's Wife .

The total package is worth about 125$.

How to Enter -
1. Leave a comment mentioning what you did to enter the contest
2. Fave the blog on Technorati ( No of entries not specified , guess it only 1 )
3. Blog about this contest in your blog ( 5 Entries )
4. Include a banner provided in your entry and you get 1 more entry.
5. Put up a banner in your side bar. ( 3 Entries )

Contest Url - Wagg.it Contest
Deadline - 19,May,2008
Prizes -
1st Prize - 150$ by Paypal + 1 Month 125 x 125 Ad spot.
2,3,4 Place - 200 EC credits + Blog Review from SEO point of view ( 3 links )
5-20 Place - 1 Month listing in Blogroll + 1 time SEO consultation

How to Enter -
Subscribe to the RSS feeds
Make a post about the contest with anchor text Wagg.it Contest
Then leave a comment with the url

Conditions
2-20 places will be selected through Random.org , to win the grand prize you need to review the blog Wagg.it and leave some meaningful comments in their blog.