This column was originally published on RealMoney on Aug. 15 at 12:35 p.m. EDT. It's being republished as a bonus for TheStreet.com readers.Many single-digit stocks have lost their footing this summer as market players turn away from these highly speculative issues. But constructive patterns throughout the group suggest these issues will move considerably higher in the fourth quarter. So let's inspect six top prospects in the under-10-bucks category. What are the advantages and disadvantages of single-digit stocks? On the plus side, they're capable of fast, high-percentage gains. But the sword cuts both ways, and you can lose a fortune holding too many shares at the wrong time. It's also true that many small-stock companies aren't profitable and don't have a lot of money in the bank. So keep in mind that buying small stocks is an act of speculation, not capital preservation. The best way to play these small wonders is to keep one eye on long-term resistance, keep position size down and take profits without hesitation when price approaches your predetermined reward target. Qwest Communications ( Q) has been on the recovery trail for more than a year now in a powerful rally that should continue into 2007. The stock just popped up to $9 in the latest leg of its healthy uptrend. It's consolidating its gains just below that number and could be setting up for a push into double digits in the next 30 to 60 days. Note the two-month parallel channel with well-defined boundaries at $8 and $9.15. The best trade entry will come on a low-volume pullback to channel support. This decline could happen sometime between now and Labor Day, so get this one on your trading screen and watch it closely.