Tim Sweeney is a music consultant specializing in bands and performing artists (not necessarily songwriters seeking cuts). I've never met him, but I know people who've attended his workshops and worked one-on-one with him, and I own
one of his books . He writes tons of articles for sites like getsigned.com.
Click here and scroll down to the bottom to read some of his stuff.
The bottom line, in my opinion: Sweeney has good ideas, and the word on the street is that he's credible. Remember, though, that he's a consultant, and like all consultants, he charges big bucks for his personalized attention, and there's no guarantee that his strategies will work any better than your own.
That said, I think his free articles are well worth reading. Try out his ideas first and see if they're right for your career situation.
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Scott Andrew and the Walkingbirds
Lo-fi DIY acoustic pop
Hear it:
http://www.scottandrew.com/main/music