You don't want to make any absolute statements. Sites like flickr are siren-like ideas that turned out very well. It's always a tough judgement call for when to

You don't want to make any absolute statements. Sites like flickr are siren-like ideas that turned out very well. It's always a tough judgement call for when to get distracted. The important thing is to make sure you're pursing this other idea because it's actually something worthwhile not just as an escape from your startup not doing so great... Basically, think about things rationally and not emotionally.