Think about it: what’s one of the first things people look for once they’ve clocked a masterpiece? The signature. Be discreet with it but try to do it whenever possible. by tying your name and work together, people will begin to get a better picture of what you do and therefore when they should call you for help.
Granted, you might put in a lot of effort and get nothing in return, but that’s the nature of competitions. You never know who might see the work and which drunk creative director you can talk into looking over your portfolio as he staggers around the after-show party! Plus there is a school of thought that believes there’s something to be had from taking part. If that’s too much of a stretch, you can always rant about the unfairness on your blog.
Despite appearance to the contrary, blogging is not about telling everyone what you had for breakfast. It should inspire interaction, just as any other piece of work should. Boring people is worse than having no effect at all. Inspiration is fine but don’t make a rod for your own back by showing everyone how many better designers there are than you out there. Be funny, charming, entertaining and informative at all times.