Congratulation to Hinching and Vincent. You have both won 500 entrecard credit to promote your website.
My contest actually failed miserably as there is only an increase of 3 feed subscription via email. 
The chance of wining this contest is a whooping 2/3 (66.67%). No harm done since I got this Entrecard Credit from Problogger and I got a link with some extra traffic. Overall I think it fails because of few reasons and lack of experience. Also, I have no use for the Entrecard because it is not working well for me. Here are some reason where you may fail contest.
Post Frequency
Out of the 21 days, I manage to write only 13 post. Less post frequency means I have less ping on blog aggregator which will result in less visitor. If you were to launch a contest, ensure that you have time to post at least a post a day. Or write them in advance and use post timestamp.
Promotion
It would be good to have other promotional technique and advertising campaign running at the same time because will much more effective and advertising campaign will come hand in hand with the contest.
Plan, Plan and Plan
Finally, there is a lack of planing and things come out at my work which I have to handle. When you see other contest, it seems pretty easy because they already have the existing reader. Whereelse, I am only trying to gain more reader from a contest.
Overall, from this contest I did spend a little time coming out with my Announcement Add-on for your Blog.
Thanks for the price. Think that I will make good use of it.
My I suggest that for other contest, you specify that we give a post back.
thanks for the advice. My initial plan was to have easiest entry as possible. I guess I was wrong. A post back will get more people to know about this contest. But some people may be reluctant to join.
Apologies for the late reply but Adi – how do I get the 500 EC credits? My email is in the comment. Cheerio.
erm…it should be sent to your email which you used to subscribe to my feed