I can assure you that TAXI is not a "scam" and Michael Laslow (who runs TAXI) is a great guy trying to offer a genuine service to songwriters
It does sound like you have misunderstood what TAXI is though
TAXI offer a service where you pay them a membership fee (around $299 for year 1 I think) and you are then allowed to pitch to opportunities they send you
Unlike a normal "lead sheet", where you pay to get access to leads, you must send your pitches to TAXI first - and then the TAXI screeners (who are all "industry people") decide whether your pitch gets "forwarded" to the label, publisher, music supervisor, music library etc.
TAXI claim that it is this screening that ensures they get robust leads as they separate the "wheat from the chaff" before passing them on
The flipside of this is that you may not ever get a song forwarded out of TAXI, which is where I think a lot of the negative feedback about TAXI comes from – I agree with STC that the “sour grapes” is usually because the song just wasn’t good enough
Much like a golfer complaining about a golf course because they had a crap round!
The kicker is – as well as the membership fee you also need to pay $5 per song submission
TAXI claim this helps people to focus their submissions (rather than use a scatter gun approach) and stop just submitting for everything – even pitches that may not be suitable
The $5 also covers the “screener’s fee” – and you also get a critique returned from most pitches telling you why it didn’t get forwarded
Once it has been forwarded TAXI are not involved – it is up to you to negotiate your deal with the person that made the listing (the label, publisher, music library etc.)
TAXI would certainly not send you a “contract” – you either want to join for a year or not
Whether TAXI is actually right for you depends on what you want out of it
IMHO it is a lot cheaper than moving to Nashville, LA, New York etc. and will increase your chance over non-solicited pitching
You pays your money – you takes your choice…