I only have two sub pennies at the moment(including AXCG)... I tend to mostly just trade penny stocks on the nasdaq and make a killing doing so...When it comes to sub-pennies I usually just buy 1 or two for fun....but pennies listed on the nasdaq are are far less risky, BUT I usually have to settle only for 10 to 25% gains and I pay for a monthly newsletter to find them for me :)....but that's okay...I've got tons of books on technical analysis that I'm slowing weeding through and learning lots...
But I enjoy stocks like AXCG because the percentage in gain potential is much greater...I believe AXCG is a winner long-term, but that's my own opinion.