some research on myg, page-42

To talk of double tops & triple tops is just ridiculous.
If people are going to use TA terms, at least know something
about them, otherwise its misleading. Use Google to inform
& educate yourself on TA patterns. Here is a link about
double tops:
http://stockcharts.com/school/doku.php?id=chart_school:chart_analysis:chart_patterns:double_top

Here are some salient points from the page:

"While the double top formation may seem straightforward,
technicians should take proper steps to avoid deceptive
double tops. The peaks should be separated by about a
month. If the peaks are too close, they could just
represent normal resistance rather than a lasting
change in the supply/demand picture...."