7 out of 10 is good enough to establish a pattern, but you should really try and figure out who your 10 turks were demographically before walkin off into the sunset.
do some basic demographic questions if you can, and always try and avoid easily answer questions with turks because ultimately in the end they are on turk to make a buck, and they will blow thru scale questions and simple yes/nos faster than all get out to get paid.
the other thing i'd do is try to get some folks you know who use the tool, or if its for a broad audience get someone you know, a friend of a friend and test them to see how they stack up against your turk findings, video tape these sessions for the dev team so they can relive the awe of "oh my frickin god" when and if it occurs
overall turk is fine and your 7 of 10 is fine if its a broad range acceptance target like "everyone searches" or what not but if its really demographic specific you need to know that piece of data from the turks because odds are that 10 really represents up to 3 or 4 different demographics, which makes your 7 more like 2 or 3
do some basic demographic questions if you can, and always try and avoid easily answer questions with turks because ultimately in the end they are on turk to make a buck, and they will blow thru scale questions and simple yes/nos faster than all get out to get paid.
the other thing i'd do is try to get some folks you know who use the tool, or if its for a broad audience get someone you know, a friend of a friend and test them to see how they stack up against your turk findings, video tape these sessions for the dev team so they can relive the awe of "oh my frickin god" when and if it occurs
overall turk is fine and your 7 of 10 is fine if its a broad range acceptance target like "everyone searches" or what not but if its really demographic specific you need to know that piece of data from the turks because odds are that 10 really represents up to 3 or 4 different demographics, which makes your 7 more like 2 or 3