This fall I'm 99% going to London to attend the awesome Devdays 2011;
I have many reasons to go there and some of them are:

• Professional stuff
• Great people
• Awesome topics
• Unicorns
• Passion
• London :)

Obviously all the cool technologies that will be discussed are light years far from my daily work but useful for my side projects and maybe for some future employment.

Now, to get to the point; a coworker said to me that he won't come with me because Devday London is expensive, and something expensive should reward you with a certificate, a certificate that could have some value to the eyes on an employer.

Is he right?

Do you think that attenting to this kind of event have some value on a resume?
Should it be highlighted?
Does it have any value for a future employer?