#2
Pretty useless to be honest, you don;t really know what you are talking about especially in the 'guitar work' and 'writing music' sections you dont't really have any usefull advice.
(for guitarists and bassists) write down a few random frets
eg. 7, 5, 3, 1
and turn them into chords
eg.E5, A5, C5, F5..

I especially hate that bit.

On the plus side it is not a bad idea, if you would let people contribute more songwriting and more musical styles in a less one dimentional way, it would be a usefull page.
#3
am pretty sure that your not allowed to advertise in this section.

also the sites crap anyway nothing usefull in there.