No one can promise to do this all the time, of course, nor should they — exclusive exclusivity is an impossibility, and ultimately skipping something because some obscure, hardly-noticed blogger (ahem) managed a rare exclusive does a disservice to those who come to your blog first and foremost. Also, of course, supporting the blog community and the music community together is easier if you're willing to help your fans find others, through the occasional repost with credit-where-credit-is-due.

But a very high percentage of what I find here is not yet “out there”, and if the occasional post is the second or third share of something, then I think that helps with buzz. I'd encourage you not to be shy with that occasional “second”, on behalf of artists and fans everywhere — after all, we should never assume that a given fan reads the same SET of blogs, and “me too” means something when it comes from a voice we've learned to trust, such as your own.

Epic Fail on that count huh