I'd say it was all third party,some owning shares, and a few others, who touted the heck out of it around that time.  http://stockpromoters.com/View-Stock-Promotio...ymbol.aspx

Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.0105	Volume:	13,437,740
	Change:	0.0019	% Change:	22.093
3 Month :	High/Low:	0.028 / 0.001	Volume 3m :	29,502,781
Promoter: Hot Shot Stocks
Compensation: None Listed
Date: 4/4/2012
Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.0117	Volume:	111,729,990
	Change:	0.0037	% Change:	46.25
3 Month :	High/Low:	0.028 / 0.0006	Volume 3m :	25,121,187
Promoter: Penny Stock Market Bulls
Compensation: Pennystockmarketbulls.com has NOT been compensated for the distribution of this particular email.However, Pennystockmarketbulls.com holds 1,130,000 shares in GDSM which has been bought at the open market.
Date: 3/2/2012
Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.0173	Volume:	41,979,057
	Change:	-0.0107	% Change:	-38.214
3 Month :	High/Low:	0.028 / 0.0006	Volume 3m :	19,238,706
Promoter: Penny Stock Market Bulls
Compensation: Pennystockmarketbulls.com has NOT been compensated for the distribution of this particular email.
Date: 2/28/2012
Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.0173	Volume:	41,979,057
	Change:	-0.0107	% Change:	-38.214
3 Month :	High/Low:	0.028 / 0.0006	Volume 3m :	19,238,706
Promoter: Raging Stock Bull
Compensation: Ragingstockbull.com has NOT been compensated for the distribution of this particular email.
Date: 2/28/2012
Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.028	Volume:	54,031,671
	Change:	0.008	% Change:	40
3 Month :	High/Low:	0.028 / 0.0006	Volume 3m :	18,859,367
Promoter: Penny Stock Market Bulls
Compensation: Pennystockmarketbulls.com has NOT been compensated for the distribution of this particular email. However, Pennystockmarketbulls.com holds 1,130,000 shares in GDSM which has been bought at the open market.
Date: 2/27/2012
Company:	Gold Coast Mining Corp. Florida ( GDSM )
End of Day:	Close:	0.028	Volume:	54,031,671
	Change:	0.008	% Change:	40
3 Month :	High/Low:	0.028 / 0.0006	Volume 3m :	18,859,367
Promoter: Raging Stock Bull
Compensation: Ragingstockbull.com has NOT been compensated for the distribution of this particular email. However, Ragingstockbull.com holds 1,130,000 shares in GDSM which has been bought at the open market.
Date: 2/27/2012